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Concept explainers
a.
To Express: The quadratic function in standard form.
a.
![Check Mark](/static/check-mark.png)
Answer to Problem 28E
the quadratic function is expressed in standard form as
Explanation of Solution
Given: The function is
Calculation:
The quadratic function
The parabola opens downwards if
Solve the function:
On comparing the above equation with standard form
Therefore, the quadratic function is expressed in standard form as
b.
To Sketch: The graph of the quadratic function.
b.
![Check Mark](/static/check-mark.png)
Explanation of Solution
Given: The function is
Graph:
The standard form of the function is:
From the standard form it is observed that the graph is a parabola that opens upward and has vertex
The
Use graphing calculator to graph the function:
c.
To Find: The maximum or minimum value of the function.
c.
![Check Mark](/static/check-mark.png)
Answer to Problem 28E
The value of
Explanation of Solution
Given: The function is
Calculation:
From the above graph it is seen that the parabola opens downward, since the coefficient of
Chapter 3 Solutions
Precalculus: Mathematics for Calculus - 6th Edition
- Use the information to find and compare Δy and dy. (Round your answers to four decimal places.) y = x4 + 7 x = −3 Δx = dx = 0.01 Δy = dy =arrow_forward4. A car travels in a straight line for one hour. Its velocity, v, in miles per hour at six minute intervals is shown in the table. For each problem, approximate the distance the car traveled (in miles) using the given method, on the provided interval, and with the given number of rectangles or trapezoids, n. Time (min) 0 6 12 18|24|30|36|42|48|54|60 Speed (mph) 0 10 20 40 60 50 40 30 40 40 65 a.) Left Rectangles, [0, 30] n=5 b.) Right Rectangles, [24, 42] n=3 c.) Midpoint Rectangles, [24, 60] n=3 d.) Trapezoids, [0, 24] n=4arrow_forwardThe bracket BCD is hinged at C and attached to a control cable at B. Let F₁ = 275 N and F2 = 275 N. F1 B a=0.18 m C A 0.4 m -0.4 m- 0.24 m Determine the reaction at C. The reaction at C N Z F2 Darrow_forward
- The correct answer is C,i know that we need to use stokes theorem and parametrize the equations then write the equation F with respect to the curve but i cant seem to find a way to do it, the integral should be from 0 to 2pi but i might be wrongcould you show me the steps to get to 18piarrow_forwardA 10-ft boom is acted upon by the 810-lb force as shown in the figure. D 6 ft 6 ft E B 7 ft C 6 ft 4 ft W Determine the tension in each cable and the reaction at the ball-and-socket joint at A. The tension in cable BD is lb. The tension in cable BE is lb. The reaction at A is ( lb) i + Ib) j. (Include a minus sign if necessary.)arrow_forwardthe correct answer is A could you show me whyarrow_forward
- Good Day, Kindly assist me with this query.arrow_forwardon donne f(x) da fonction derive dhe do fonction fcsos calcule f'(x) orans chacun des Cas sulants: 3 1) f(x)=5x-11, 2- f (x) = ->³ 3-1(x) = x² 12x +π; 4-f(x)=- 5-f(x) = 33-4x6-609)=-3x²+ 7= f(x) = x + 1.8-f(x) = 4 s-f(x) = x++ X+1 -x-1 2 I 3x-4 девоarrow_forwardThe correct answer is Ccould you show me how to do it by finding a0 and and akas well as setting up the piecewise function and integratingarrow_forward
- T 1 7. Fill in the blanks to write the calculus problem that would result in the following integral (do not evaluate the interval). Draw a graph representing the problem. So π/2 2 2πxcosx dx Find the volume of the solid obtained when the region under the curve on the interval is rotated about the axis.arrow_forward38,189 5. Draw a detailed graph to and set up, but do not evaluate, an integral for the volume of the solid obtained by rotating the region bounded by the curve: y = cos²x_for_ |x| ≤ and the curve y y = about the line x = =플 2 80 F3 a FEB 9 2 7 0 MacBook Air 3 2 stv DGarrow_forwardFind f(x) and g(x) such that h(x) = (fog)(x) and g(x) = 3 - 5x. h(x) = (3 –5x)3 – 7(3 −5x)2 + 3(3 −5x) – 1 - - - f(x) = ☐arrow_forward
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