Calculus Volume 1
17th Edition
ISBN: 9781938168024
Author: Strang, Gilbert
Publisher: OpenStax College
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Textbook Question
Chapter 3.7, Problem 297E
[T] A pole stands 75 feet tall. An angle
![Chapter 3.7, Problem 297E, [T] A pole stands 75 feet tall. An angle is formed when wires of various lengths of x feet are](https://content.bartleby.com/tbms-images/9781938168024/Chapter-3/images/html_68024-3.7-297e_image001.jpg)
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Chapter 3 Solutions
Calculus Volume 1
Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...Ch. 3.1 - For the following exercises, use Equation 3.3 to...
Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions, use Equation 3.4 to...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following functions y=f(x) , find f(a)...Ch. 3.1 - For the following exercises, given the function...Ch. 3.1 - For the following exercises, given the function...Ch. 3.1 - For the following exercises, given the function...Ch. 3.1 - For the following exercises, given the function...Ch. 3.1 - [T] For the following position functions y=s(t),...Ch. 3.1 - [T] For the following position functions y=s(t),...Ch. 3.1 - [T] For the following position functions y=s(t),...Ch. 3.1 - [T] For the following position functions y=s(t),...Ch. 3.1 - [T] For the following position functions y=s(t),...Ch. 3.1 - [T] For the following position functions y=s(t),...Ch. 3.1 - For the following exercises, use the limit...Ch. 3.1 - For the following exercises, use the limit...Ch. 3.1 - For the following exercises, use the limit...Ch. 3.1 - For the following exercises, use the limit...Ch. 3.1 - [T] The position in feet of a lace car along a...Ch. 3.1 - [T] The distance in feet that a ball rolls down an...Ch. 3.1 - Two vehicles start out traveling side by side...Ch. 3.1 - [T] The total cost C(x), in hundreds of dollars,...Ch. 3.1 - [T] For the function f(x)=x32x211x+12 , do the...Ch. 3.1 - [T] For the function f(x)=x1+x2 , do the...Ch. 3.1 - Suppose that N(x) computes the number of gallons...Ch. 3.1 - [T] For the function f(x)=x45x2+4 , do the...Ch. 3.1 - [T] For the function f(x)=x2x2+1 , do the...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the definition of...Ch. 3.2 - For the following exercises, use the graph of...Ch. 3.2 - For the following exercises, use the graph of...Ch. 3.2 - For the following exercises, use the graph of...Ch. 3.2 - For the following exercises, use the graph of...Ch. 3.2 - For the following exercises, the given limit...Ch. 3.2 - For the following exercises, the given limit...Ch. 3.2 - For the following exercises, the given limit...Ch. 3.2 - For the following exercises, the given limit...Ch. 3.2 - For the following exercises, the given limit...Ch. 3.2 - For the following exercises, the given limit...Ch. 3.2 - For the following functions, sketch the graph and...Ch. 3.2 - For the following functions, sketch the graph and...Ch. 3.2 - For the following functions, sketch the graph and...Ch. 3.2 - For the following functions, sketch the graph and...Ch. 3.2 - For the following graphs, a. determine for which...Ch. 3.2 - For the following graphs, a. determine for which...Ch. 3.2 - Use the graph to evaluate a. f’(0.5), b. f’(0), c....Ch. 3.2 - For the following functions, use...Ch. 3.2 - For the following functions, use...Ch. 3.2 - For the following functions, use...Ch. 3.2 - For the following exercises, use a calculator to...Ch. 3.2 - For the following exercises, use a calculator to...Ch. 3.2 - For the following exercises, use a calculator to...Ch. 3.2 - For the following exercises, use a calculator to...Ch. 3.2 - For the following exercises, use a calculator to...Ch. 3.2 - For the following exercises, use a calculator to...Ch. 3.2 - For the following exercises, describe what the two...Ch. 3.2 - For the following exercises, describe what the two...Ch. 3.2 - For the following exercises, describe what the two...Ch. 3.2 - For the following exercises, describe what the two...Ch. 3.2 - For the following exercises, describe what the two...Ch. 3.2 - For the following exercises, describe what the two...Ch. 3.2 - Sketch the graph of a function y=f(x) with all of...Ch. 3.2 - Suppose temperature T in degrees Fahrenheit at a...Ch. 3.2 - Suppose the total profit of a company is y=P(x)...Ch. 3.2 - The graph in the following figure models die...Ch. 3.2 - For the following exercises, use the following...Ch. 3.2 - [T] Construct a table of values for h' (t) and...Ch. 3.2 - [T] The best linear fit to the data is given by...Ch. 3.2 - [T] The best quadratic fit to the data is given by...Ch. 3.2 - [T] The best cubic fir to the data is given by...Ch. 3.2 - Using the best linear, quadratic, and cubic fits...Ch. 3.3 - Figure 3.21 (a) one section of the racetrack can...Ch. 3.3 - Figure 3.21 (a) one section of the racetrack can...Ch. 3.3 - Figure 3.21 (a) one section of the racetrack can...Ch. 3.3 - Figure 3.21 (a) one section of the racetrack can...Ch. 3.3 - Figure 3.21 (a) one section of the racetrack can...Ch. 3.3 - Figure 3.21 (a) one section of the racetrack can...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find f(x) for each...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, find the equation of...Ch. 3.3 - For the following exercises, assume that f(x) and...Ch. 3.3 - For the following exercises, assume that f(x) and...Ch. 3.3 - For the following exercises, assume that f(x) and...Ch. 3.3 - For the following exercises, assume that f(x) and...Ch. 3.3 - For the following exercises, use the following...Ch. 3.3 - For the following exercises, use the following...Ch. 3.3 - For the following exercises, use the following...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - For the following exercises, a. evaluate f(a), and...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - For the following exercises, evaluate f(a), and...Ch. 3.3 - Determine all points on the graph of f(x)=x3+x2x1...Ch. 3.3 - Find a quadratic polynomial such that f(1)=5 ,...Ch. 3.3 - A car driving along a freeway with traffic has...Ch. 3.3 - [T] A herring swimming along a straight line has...Ch. 3.3 - The population in millions of arctic flounder in...Ch. 3.3 - [T] The concentration of antibiotic in the...Ch. 3.3 - A book publisher has a cost function given by...Ch. 3.3 - 149. [T] According to Newton’s law of universal...Ch. 3.4 - For the following exercises, the given functions...Ch. 3.4 - For the following exercises, the given functions...Ch. 3.4 - For the following exercises, the given functions...Ch. 3.4 - A rocket is fired vertically upward from the...Ch. 3.4 - A ball is thrown downward with a speed of 8 ft/s...Ch. 3.4 - The position function s(t)=t23t4 represents the...Ch. 3.4 - The position of a hummingbird flying along a...Ch. 3.4 - A potato is launched vertically upward with an...Ch. 3.4 - The position function s(t)=t38t gives the position...Ch. 3.4 - The following graph shows die position y=s(t) of...Ch. 3.4 - The cost function, in dollars, of a company that...Ch. 3.4 - The price p (in dollars) and the demand x for a...Ch. 3.4 - [T] A profit is earned when revenue exceeds cost....Ch. 3.4 - [T] In general, the profit function is the...Ch. 3.4 - A small town in Ohio commissioned an actuarial...Ch. 3.4 - [T] A culture of bacteria grows in number...Ch. 3.4 - The centripetal force of an object of mass m is...Ch. 3.4 - The following questions concern the population (in...Ch. 3.4 - The following questions concern the population (in...Ch. 3.4 - For the following exercises, consider an astronaut...Ch. 3.4 - For the following exercises, consider an astronaut...Ch. 3.4 - For the following exercises, consider an astronaut...Ch. 3.4 - For the following exercises, consider an astronaut...Ch. 3.4 - For the following exercises, consider an astronaut...Ch. 3.4 - [T] The populations of the snowshoe hare (in...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find dydx for the...Ch. 3.5 - For the following exercises, find the equation of...Ch. 3.5 - For the following exercises, find the equation of...Ch. 3.5 - For the following exercises, find the equation of...Ch. 3.5 - For the following exercises, find the equation of...Ch. 3.5 - For the following exercises, find the equation of...Ch. 3.5 - For the following exercises, find the equation of...Ch. 3.5 - For the following exercises, find d2ydx2 for the...Ch. 3.5 - For the following exercises, find d2ydx2 for the...Ch. 3.5 - For the following exercises, find d2ydx2 for the...Ch. 3.5 - For the following exercises, find d2ydx2 for the...Ch. 3.5 - For the following exercises, find d2ydx2 for the...Ch. 3.5 - For the following exercises, find d2ydx2 for the...Ch. 3.5 - Find all x values on the graph of f(x)=3sinxcosx...Ch. 3.5 - Find all x values on the graph of f(x)=x2cosx for...Ch. 3.5 - Let f(x)=cotx . Determine the points on the graph...Ch. 3.5 - [T] A mass on a spring bounces up and down in...Ch. 3.5 - Let the position of a swinging pendulum in simple...Ch. 3.5 - After a diver jumps off a diving board, the edge...Ch. 3.5 - The number of hamburgers sold at a fast-food...Ch. 3.5 - [T] The amount of rainfall per month in Phoenix,...Ch. 3.5 - For the following exercises, use the quotient rule...Ch. 3.5 - For the following exercises, use the quotient rule...Ch. 3.5 - For the following exercises, use the quotient rule...Ch. 3.5 - Use the definition of derivative and the identity...Ch. 3.5 - For the following exercises, find the requested...Ch. 3.5 - For the following exercises, find the requested...Ch. 3.5 - For the following exercises, find the requested...Ch. 3.5 - For the following exercises, find the requested...Ch. 3.5 - For the following exercises, find the requested...Ch. 3.6 - For the following exercises, given y=f(u) and...Ch. 3.6 - For the following exercises, given y=f(u) and...Ch. 3.6 - For the following exercises, given y=f(u) and...Ch. 3.6 - For the following exercises, given y=f(u) and...Ch. 3.6 - For the following exercises, given y=f(u) and...Ch. 3.6 - For the following exercises, given y=f(u) and...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For each of the following exercises, decompose...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - For the following exercises, find dydx for each...Ch. 3.6 - Let y=[f(x)]3 and suppose that f(1)=4 and dydx=10...Ch. 3.6 - Let y=(f(x)+5x2)4 and suppose that f(1)=4 and...Ch. 3.6 - Let y=(f(u)+3x)2 and u=x32x . If f(4)=6 and...Ch. 3.6 - [T] Find the equation of the tangent line of...Ch. 3.6 - [T] Fine the equation of the tangent line to...Ch. 3.6 - Find the x-coordinates at which the tangent line...Ch. 3.6 - [T] Find an equation of the line that is normal to...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.6 - For the following exercises, use the information...Ch. 3.7 - For the following exercises, use the graph of...Ch. 3.7 - For the following exercises, use the graph of...Ch. 3.7 - For the following exercises, use the graph of...Ch. 3.7 - For the following exercises, use the graph of...Ch. 3.7 - For the following exercises, use the functions...Ch. 3.7 - For the following exercises, use the functions...Ch. 3.7 - For the following exercises, use the functions...Ch. 3.7 - For the following exercises, use the functions...Ch. 3.7 - For each of the following functions, find (f1)(a)...Ch. 3.7 - For each of the following functions, find (f1)(a)...Ch. 3.7 - For each of the following functions, find (f1)(a)...Ch. 3.7 - For each of the following functions, find (f1)(a)...Ch. 3.7 - For each of the following functions, find (f1)(a)...Ch. 3.7 - For each of the following functions, find (f1)(a)...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For each of the given function y=f(x) . Find the...Ch. 3.7 - For the following exercises, use the given values...Ch. 3.7 - For the following exercises, use the given values...Ch. 3.7 - For the following exercises, use the given values...Ch. 3.7 - For the following exercises, use the given values...Ch. 3.7 - For the following exercises, use the given values...Ch. 3.7 - For the following exercises, use the given values...Ch. 3.7 - [T] The position of a moving hockey puck after t...Ch. 3.7 - [T] A building that is 225 feet tall casts a...Ch. 3.7 - [T] A pole stands 75 feet tall. An angle is...Ch. 3.7 - [T] A television camera at ground level is 2000...Ch. 3.7 - [T] A local movie theater with a 30-foot-high...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, find the equation of...Ch. 3.8 - For the following exercises, find the equation of...Ch. 3.8 - For the following exercises, find the equation of...Ch. 3.8 - For the following exercises, find the equation of...Ch. 3.8 - For the following exercises, find the equation of...Ch. 3.8 - For the following exercises, find the equation of...Ch. 3.8 - [T] The graph of a folium of Descartes with...Ch. 3.8 - For the equation x2+2xy3y2=0 , Find the equation...Ch. 3.8 - Find all points on the graph of y327y=x290 at...Ch. 3.8 - For the equation x2+xy+y2=7 , Find the x...Ch. 3.8 - Find the equation of the tangent line to the graph...Ch. 3.8 - Find the equation of the tangent line to the graph...Ch. 3.8 - Find y and y for x2+6xy2y2=3 .Ch. 3.8 - T] The number of cell phones produced when...Ch. 3.8 - T] The number of cars produced when x dollars is...Ch. 3.8 - The volume of a right circular cone of radius xand...Ch. 3.8 - For the following exercises, consider a closed...Ch. 3.8 - For the following exercises, consider a closed...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.8 - For the following exercises, use implicit...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f (x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, find f(x) for each...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - For the following exercises, use logarithmic...Ch. 3.9 - [T] Find an equation of the tangent line to the...Ch. 3.9 - [T] Find the equation of the line that is normal...Ch. 3.9 - [T] Find the equation of the tangent line to the...Ch. 3.9 - Consider the function y=x1/x for x > 0. Determine...Ch. 3.9 - The formula I(t)=sintet is the formula for a...Ch. 3.9 - [T] The population of Toledo, Ohio, in 2000 was...Ch. 3.9 - [T] An isotope of the element erbium has a...Ch. 3.9 - [T] The number of cases of influenza in New York...Ch. 3.9 - [T] The relative rate of change of a...Ch. 3.9 - For the following exercises, use the population of...Ch. 3.9 - For the following exercises, use the population of...Ch. 3.9 - For the following exercises, use the population of...Ch. 3.9 - For the following exercises, use the population of...Ch. 3 - True or False? Justify the answer with a proof or...Ch. 3 - True or False? Justify the answer with a proof or...Ch. 3 - True or False? Justify the answer with a proof or...Ch. 3 - True or False? Justify the answer with a proof or...Ch. 3 - Use the Limit definition of the derivative to...Ch. 3 - Use the Limit definition of the derivative to...Ch. 3 - Find the derivatives of the following functions....Ch. 3 - Find the derivatives of the following functions....Ch. 3 - Find the derivatives of the following functions....Ch. 3 - Find the derivatives of the following functions....Ch. 3 - Find the derivatives of the following functions....Ch. 3 - Find the derivatives of the following functions....Ch. 3 - Find the derivatives of the following functions...Ch. 3 - Find the derivatives of the following functions....Ch. 3 - Find the following derivatives of various orders...Ch. 3 - Find the following derivatives of various orders...Ch. 3 - Find the following derivatives of various orders....Ch. 3 - Find the equation of the tangent line to the...Ch. 3 - Find the equation of the tangent line to the...Ch. 3 - Draw the derivative for the following graphs. 386.Ch. 3 - Draw the derivative for the following graphs. 387....Ch. 3 - Find and graph the derivative. What is the...Ch. 3 - Find w' (3). What is the physical meaning of this...Ch. 3 - Using the table, estimate the derivative of the...Ch. 3 - Estimate the derivative of the wind speed at hour...
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- A tank initially contains 50 gal of pure water. Brine containing 3 lb of salt per gallon enters the tank at 2 gal/min, and the (perfectly mixed) solution leaves the tank at 3 gal/min. Thus, the tank is empty after exactly 50 min. (a) Find the amount of salt in the tank after t minutes. (b) What is the maximum amount of salt ever in the tank?arrow_forwardDraw a picture of a normal distribution with mean 70 and standard deviation 5.arrow_forwardWhat do you guess are the standard deviations of the two distributions in the previous example problem?arrow_forward
- 1 What is the area of triangle ABC? 12 60° 60° A D B A 6√√3 square units B 18√3 square units 36√3 square units D 72√3 square unitsarrow_forwardEach answer must be justified and all your work should appear. You will be marked on the quality of your explanations. You can discuss the problems with classmates, but you should write your solutions sepa- rately (meaning that you cannot copy the same solution from a joint blackboard, for exam- ple). Your work should be submitted on Moodle, before February 7 at 5 pm. 1. True or false: (a) if E is a subspace of V, then dim(E) + dim(E) = dim(V) (b) Let {i, n} be a basis of the vector space V, where v₁,..., Un are all eigen- vectors for both the matrix A and the matrix B. Then, any eigenvector of A is an eigenvector of B. Justify. 2. Apply Gram-Schmidt orthogonalization to the system of vectors {(1,2,-2), (1, −1, 4), (2, 1, 1)}. 3. Suppose P is the orthogonal projection onto a subspace E, and Q is the orthogonal projection onto the orthogonal complement E. (a) The combinations of projections P+Q and PQ correspond to well-known oper- ators. What are they? Justify your answer. (b) Show…arrow_forwardpleasd dont use chat gptarrow_forward
- 1. True or false: (a) if E is a subspace of V, then dim(E) + dim(E+) = dim(V) (b) Let {i, n} be a basis of the vector space V, where vi,..., are all eigen- vectors for both the matrix A and the matrix B. Then, any eigenvector of A is an eigenvector of B. Justify. 2. Apply Gram-Schmidt orthogonalization to the system of vectors {(1, 2, -2), (1, −1, 4), (2, 1, 1)}. 3. Suppose P is the orthogonal projection onto a subspace E, and Q is the orthogonal projection onto the orthogonal complement E. (a) The combinations of projections P+Q and PQ correspond to well-known oper- ators. What are they? Justify your answer. (b) Show that P - Q is its own inverse. 4. Show that the Frobenius product on n x n-matrices, (A, B) = = Tr(B*A), is an inner product, where B* denotes the Hermitian adjoint of B. 5. Show that if A and B are two n x n-matrices for which {1,..., n} is a basis of eigen- vectors (for both A and B), then AB = BA. Remark: It is also true that if AB = BA, then there exists a common…arrow_forwardQuestion 1. Let f: XY and g: Y Z be two functions. Prove that (1) if go f is injective, then f is injective; (2) if go f is surjective, then g is surjective. Question 2. Prove or disprove: (1) The set X = {k € Z} is countable. (2) The set X = {k EZ,nЄN} is countable. (3) The set X = R\Q = {x ER2 countable. Q} (the set of all irrational numbers) is (4) The set X = {p.√2pQ} is countable. (5) The interval X = [0,1] is countable. Question 3. Let X = {f|f: N→ N}, the set of all functions from N to N. Prove that X is uncountable. Extra practice (not to be submitted). Question. Prove the following by induction. (1) For any nЄN, 1+3+5++2n-1 n². (2) For any nЄ N, 1+2+3++ n = n(n+1). Question. Write explicitly a function f: Nx N N which is bijective.arrow_forward3. Suppose P is the orthogonal projection onto a subspace E, and Q is the orthogonal projection onto the orthogonal complement E. (a) The combinations of projections P+Q and PQ correspond to well-known oper- ators. What are they? Justify your answer. (b) Show that P - Q is its own inverse.arrow_forward
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