Calculus For The Life Sciences
2nd Edition
ISBN: 9780321964038
Author: GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher: Pearson Addison Wesley,
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Chapter 6.5, Problem 1YT
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(7) (12 points) Let F(x, y, z) = (y, x+z cos yz, y cos yz).
Ꮖ
(a) (4 points) Show that V x F = 0.
(b) (4 points) Find a potential f for the vector field F.
(c) (4 points) Let S be a surface in R3 for which the Stokes' Theorem is valid. Use
Stokes' Theorem to calculate the line integral
Jos
F.ds;
as denotes the boundary of S. Explain your answer.
(3) (16 points) Consider
z = uv,
u = x+y,
v=x-y.
(a) (4 points) Express z in the form z = fog where g: R² R² and f: R² →
R.
(b) (4 points) Use the chain rule to calculate Vz = (2, 2). Show all intermediate
steps otherwise no credit.
(c) (4 points) Let S be the surface parametrized by
T(x, y) = (x, y, ƒ (g(x, y))
(x, y) = R².
Give a parametric description of the tangent plane to S at the point p = T(x, y).
(d) (4 points) Calculate the second Taylor polynomial Q(x, y) (i.e. the quadratic
approximation) of F = (fog) at a point (a, b). Verify that
Q(x,y) F(a+x,b+y).
=
(6) (8 points) Change the order of integration and evaluate
(z +4ry)drdy .
So S√ ²
0
Chapter 6 Solutions
Calculus For The Life Sciences
Ch. 6.1 - YOUR TURN Find the absolute extrema of the...Ch. 6.1 - Prob. 2YTCh. 6.1 - EXERCISES Find the locations of any absolute...Ch. 6.1 - EXERCISES Find the locations of any absolute...Ch. 6.1 - Prob. 3ECh. 6.1 - Prob. 4ECh. 6.1 - Prob. 5ECh. 6.1 - EXERCISES Find the locations of any absolute...Ch. 6.1 - EXERCISES Find the locations of any absolute...Ch. 6.1 - Prob. 8E
Ch. 6.1 - EXERCISES What is the difference between a...Ch. 6.1 - Prob. 11ECh. 6.1 - Prob. 12ECh. 6.1 - Prob. 13ECh. 6.1 - Prob. 14ECh. 6.1 - Prob. 15ECh. 6.1 - EXERCISES Find the absolute extrema if they exist,...Ch. 6.1 - Prob. 17ECh. 6.1 - Prob. 18ECh. 6.1 - Prob. 19ECh. 6.1 - Prob. 20ECh. 6.1 - Prob. 21ECh. 6.1 - Prob. 22ECh. 6.1 - EXERCISES Find the absolute extrema if they exist,...Ch. 6.1 - Prob. 24ECh. 6.1 - Prob. 25ECh. 6.1 - Prob. 26ECh. 6.1 - Prob. 27ECh. 6.1 - EXERCISES Find the absolute extrema if they exist,...Ch. 6.1 - Find the absolute extrema if they exist, as well...Ch. 6.1 - Prob. 30ECh. 6.1 - EXERCISES Graph each function on the indicated...Ch. 6.1 - Prob. 32ECh. 6.1 - Prob. 33ECh. 6.1 - Prob. 34ECh. 6.1 - Prob. 35ECh. 6.1 - EXERCISES Find the absolute extrema if they exist,...Ch. 6.1 - Prob. 37ECh. 6.1 - Prob. 38ECh. 6.1 - Prob. 39ECh. 6.1 - Prob. 40ECh. 6.1 - Prob. 41ECh. 6.1 - EXERCISES Let f(x)=e2x, For x0, let P(x) be the...Ch. 6.1 - Prob. 43ECh. 6.1 - EXERCISES Salmon Spawning The number of salmon...Ch. 6.1 - Prob. 45ECh. 6.1 - EXERCISES Fungal growth Because of the time that...Ch. 6.1 - EXERCISES Dentin Growth The growth of dentin in...Ch. 6.1 - Prob. 48ECh. 6.1 - Prob. 49ECh. 6.1 - EXERCISES Satisfaction Suppose some substance such...Ch. 6.1 - EXERCISES Area A piece of wire 12 ft long is cut...Ch. 6.1 - EXERCISES Area A piece of wire 12 ft long is cut...Ch. 6.1 - EXERCISES Area A piece of wire 12 ft long is cut...Ch. 6.1 - Prob. 54ECh. 6.1 - Prob. 56ECh. 6.1 - Prob. 57ECh. 6.1 - Prob. 58ECh. 6.2 - Find two nonnegative number x and y for which...Ch. 6.2 - YOUR TURN Suppose the animal in Example 2 can run...Ch. 6.2 - YOUR TURN Repeat Example 3 using an 8m by 8m piece...Ch. 6.2 - YOUR TURN Repeat Example 4 if the volume is to be...Ch. 6.2 - Prob. 1ECh. 6.2 - EXERCISES In Exercises 1-4, use the steps shown in...Ch. 6.2 - EXERCISES In Exercises 1-4, use the steps shown in...Ch. 6.2 - Prob. 4ECh. 6.2 - Prob. 5ECh. 6.2 - EXERCISES Disease Another disease hits the...Ch. 6.2 - EXERCISES Maximum Sustainable Harvest Find the...Ch. 6.2 - EXERCISES Maximum Sustainable Harvest Find the...Ch. 6.2 - EXERCISES Pollution A lake polluted by bacteria is...Ch. 6.2 - Prob. 10ECh. 6.2 - Maximum Sustainable Harvest In Exercise 11 and 12,...Ch. 6.2 - Maximum Sustainable Harvest In Exercise 11 and 12,...Ch. 6.2 - Prob. 13ECh. 6.2 - Pigeon Flight Repeat Exercise 13, but assume a...Ch. 6.2 - Applications of Extrema Bird Migration Suppose a...Ch. 6.2 - Prob. 17ECh. 6.2 - Prob. 19ECh. 6.2 - Applications of Extrema OTHER APPLICATIONS Area A...Ch. 6.2 - Prob. 21ECh. 6.2 - Prob. 22ECh. 6.2 - Prob. 23ECh. 6.2 - OTHER APPLICATIONS Cost with Fixed Area A fence...Ch. 6.2 - OTHER APPLICATIONS Packaging Design An exercise...Ch. 6.2 - OTHER APPLICATIONS Packaging Design A company...Ch. 6.2 - OTHER APPLICATIONS Container Design An open box...Ch. 6.2 - OTHER APPLICATIONS Container Design Consider the...Ch. 6.2 - OTHER APPLICATIONS Packaging Cost A closed box...Ch. 6.2 - Prob. 31ECh. 6.2 - Prob. 32ECh. 6.2 - Prob. 33ECh. 6.2 - Packaging Design A cylindrical box will be tied up...Ch. 6.2 - Cost A company wishes to run a utility cable from...Ch. 6.2 - Cost Repeat Exercise 38, but make point A 7 miles...Ch. 6.2 - Prob. 40ECh. 6.2 - Travel Time Repeat Example 40, but assume the...Ch. 6.2 - Postal Regulations The U.S. postal service...Ch. 6.2 - Ladder A thief tries to enter a building by...Ch. 6.2 - Ladder A janitor in a hospital needs to carry a...Ch. 6.3 - Find dydx if x2+y2=xy.Ch. 6.3 - Prob. 2YTCh. 6.3 - Your Turn The graph of y4x4y2+x2=0 is called the...Ch. 6.3 - Prob. 1ECh. 6.3 - Prob. 2ECh. 6.3 - Find dydxby implicit differentiation for the...Ch. 6.3 - Prob. 4ECh. 6.3 - Prob. 5ECh. 6.3 - Prob. 6ECh. 6.3 - Prob. 7ECh. 6.3 - Prob. 8ECh. 6.3 - Find dy/dxby implicit differentiation for the...Ch. 6.3 - Find dy/dxby implicit differentiation for the...Ch. 6.3 - Prob. 11ECh. 6.3 - Prob. 12ECh. 6.3 - Prob. 13ECh. 6.3 - EXERCISES Find dy/dxby implicit differentiation...Ch. 6.3 - Find dy/dxby implicit differentiation for the...Ch. 6.3 - Prob. 16ECh. 6.3 - EXERCISES Find dy/dxby implicit differentiation...Ch. 6.3 - Prob. 18ECh. 6.3 - EXERCISES Find the equation of the tangent line at...Ch. 6.3 - Prob. 20ECh. 6.3 - Prob. 21ECh. 6.3 - Prob. 22ECh. 6.3 - Prob. 23ECh. 6.3 - Prob. 24ECh. 6.3 - Prob. 25ECh. 6.3 - Prob. 26ECh. 6.3 - Find the equation of the tangent line at the given...Ch. 6.3 - Prob. 28ECh. 6.3 - Prob. 29ECh. 6.3 - Prob. 30ECh. 6.3 - Prob. 31ECh. 6.3 - Prob. 32ECh. 6.3 - Prob. 33ECh. 6.3 - Prob. 34ECh. 6.3 - Prob. 35ECh. 6.3 - Prob. 36ECh. 6.3 - Information on curve in Exercise 37-40, as well as...Ch. 6.3 - Information on curve in Exercise 37-40, as well as...Ch. 6.3 - Prob. 39ECh. 6.3 - Prob. 40ECh. 6.3 - Prob. 41ECh. 6.3 - Prob. 42ECh. 6.3 - Prob. 43ECh. 6.3 - Prob. 44ECh. 6.3 - Prob. 45ECh. 6.3 - Prob. 46ECh. 6.3 - Biochemical Reaction A simple biochemical reaction...Ch. 6.3 - Species The relationship between the number of...Ch. 6.3 - Prob. 49ECh. 6.3 - Prob. 50ECh. 6.3 - Prob. 51ECh. 6.3 - Prob. 52ECh. 6.3 - Prob. 53ECh. 6.4 - YOUR TURN Suppose x are y are both functions of t...Ch. 6.4 - YOUR TURN A 25ft ladder is placed against a...Ch. 6.4 - Prob. 3YTCh. 6.4 - Repeat Example 5 using the daily demand function...Ch. 6.4 - Assume x and y are functions of t. Evaluate...Ch. 6.4 - Assume x and y are functions of t. Evaluate...Ch. 6.4 - Assume x and y are functions of t. Evaluate...Ch. 6.4 - Assume x and y are functions of t. Evaluate...Ch. 6.4 - Assume x and y are functions of t. Evaluate...Ch. 6.4 - Prob. 6ECh. 6.4 - Prob. 7ECh. 6.4 - Assume xand yare functions of t.Evaluate dy/dtfor...Ch. 6.4 - Assume xand yare functions of t.Evaluate dy/dtfor...Ch. 6.4 - Prob. 10ECh. 6.4 - Prob. 11ECh. 6.4 - Prob. 12ECh. 6.4 - LIFE SCIENCE APPLICATIONS Brain Mass The brain...Ch. 6.4 - Prob. 14ECh. 6.4 - LIFE SCIENCE APPLICATIONS Metabolic Rate The...Ch. 6.4 - LIFE SCIENCE APPLICATIONS Metabolic Rate The...Ch. 6.4 - Lizards The energy cost of horizontal locomotion...Ch. 6.4 - Prob. 18ECh. 6.4 - Crime Rate Sociologists have found that crime...Ch. 6.4 - Memorization Skills Under certain conditions, a...Ch. 6.4 - Sliding Ladder A 17-ft ladder is placed against a...Ch. 6.4 - Distance a. One car leaves a given point and...Ch. 6.4 - AreaA rock is thrown into a still pond. The...Ch. 6.4 - A spherical snowball is placed in the sun. The sun...Ch. 6.4 - Ice CubeAn ice cube that is 3 cm on each side is...Ch. 6.4 - Prob. 26ECh. 6.4 - LIFE SCIENCE APPLICATION Shadow Length A man 6 ft...Ch. 6.4 - LIFE SCIENCE APPLICATION Water Level A trough has...Ch. 6.4 - Prob. 29ECh. 6.4 - LIFE SCIENCE APPLICATION Kite Flying Christine...Ch. 6.4 - Prob. 31ECh. 6.4 - Prob. 32ECh. 6.4 - Prob. 33ECh. 6.4 - Prob. 34ECh. 6.4 - Rotating Lighthouse The beacon on a lighthouse 50m...Ch. 6.4 - Rotating Camera A television camera on a tripod...Ch. 6.5 - YOUR TURN Find dy if y=300x23,x=8, and dx=0.05.Ch. 6.5 - Prob. 2YTCh. 6.5 - YOUR TURN Repeat Example 4 for r=1.25mm with a...Ch. 6.5 - Prob. 1ECh. 6.5 - Prob. 2ECh. 6.5 - Prob. 3ECh. 6.5 - Prob. 4ECh. 6.5 - For Exercises 1-8, find dyfor the given values of...Ch. 6.5 - Differentials: Linear Approximation For Exercises...Ch. 6.5 - Differentials: Linear Approximation For Exercises...Ch. 6.5 - Prob. 8ECh. 6.5 - Prob. 9ECh. 6.5 - Prob. 10ECh. 6.5 - Prob. 11ECh. 6.5 - Use the differential to approximate each quantity....Ch. 6.5 - Prob. 13ECh. 6.5 - Use the differential to approximate each quantity....Ch. 6.5 - Prob. 15ECh. 6.5 - Prob. 16ECh. 6.5 - Prob. 17ECh. 6.5 - Use the differential to approximate each quantity....Ch. 6.5 - Prob. 19ECh. 6.5 - Prob. 20ECh. 6.5 - LIFE SCIENCE APPLICATIONS Bacteria Population The...Ch. 6.5 - Prob. 22ECh. 6.5 - Prob. 23ECh. 6.5 - LIFE SCIENCE APPLICATIONS Area of an Oil Slick An...Ch. 6.5 - LIFE SCIENCE APPLICATIONS Area of a Bacteria...Ch. 6.5 - Prob. 26ECh. 6.5 - LIFE SCIENCE APPLICATIONS Pigs Researchers have...Ch. 6.5 - Prob. 28ECh. 6.5 - OTHER APPLICATIONS Volume A spherical snowball is...Ch. 6.5 - Prob. 30ECh. 6.5 - Prob. 31ECh. 6.5 - Prob. 32ECh. 6.5 - Prob. 33ECh. 6.5 - Prob. 34ECh. 6.5 - Prob. 35ECh. 6.5 - Tolerance A worker is constructing a cubical box...Ch. 6.5 - Measurement Error A cone has a known height of...Ch. 6.5 - Material Requirement A cube 4in. on an edge is...Ch. 6.5 - Material Requirement Beach balls 1ft in diameter...Ch. 6.CR - Prob. 1CRCh. 6.CR - Prob. 2CRCh. 6.CR - Prob. 3CRCh. 6.CR - Determine whether each of the following statements...Ch. 6.CR - Determine whether each of the following statements...Ch. 6.CR - Determine whether each of the following statements...Ch. 6.CR - Determine whether each of the following statements...Ch. 6.CR - Prob. 8CRCh. 6.CR - Prob. 9CRCh. 6.CR - Prob. 10CRCh. 6.CR - Prob. 11CRCh. 6.CR - Prob. 12CRCh. 6.CR - Prob. 13CRCh. 6.CR - Prob. 14CRCh. 6.CR - Prob. 15CRCh. 6.CR - Prob. 16CRCh. 6.CR - Prob. 18CRCh. 6.CR - Prob. 19CRCh. 6.CR - Prob. 20CRCh. 6.CR - Prob. 21CRCh. 6.CR - Prob. 22CRCh. 6.CR - Prob. 23CRCh. 6.CR - Prob. 24CRCh. 6.CR - Prob. 25CRCh. 6.CR - Prob. 26CRCh. 6.CR - Prob. 27CRCh. 6.CR - Prob. 28CRCh. 6.CR - Prob. 29CRCh. 6.CR - Prob. 30CRCh. 6.CR - Prob. 31CRCh. 6.CR - Prob. 32CRCh. 6.CR - Prob. 33CRCh. 6.CR - Prob. 34CRCh. 6.CR - Prob. 35CRCh. 6.CR - Prob. 36CRCh. 6.CR - Prob. 37CRCh. 6.CR - Prob. 38CRCh. 6.CR - Prob. 39CRCh. 6.CR - Prob. 40CRCh. 6.CR - Prob. 41CRCh. 6.CR - Prob. 42CRCh. 6.CR - Prob. 43CRCh. 6.CR - Prob. 44CRCh. 6.CR - Prob. 45CRCh. 6.CR - Prob. 46CRCh. 6.CR - Prob. 47CRCh. 6.CR - Prob. 48CRCh. 6.CR - Prob. 49CRCh. 6.CR - Prob. 50CRCh. 6.CR - Prob. 53CRCh. 6.CR - Prob. 54CRCh. 6.CR - OTHER APPLICATIONS Sliding Ladder A 50-ft ladder...Ch. 6.CR - Prob. 56CRCh. 6.CR - Prob. 57CRCh. 6.CR - Prob. 58CRCh. 6.CR - Prob. 59CRCh. 6.CR - Prob. 60CRCh. 6.CR - Prob. 61CRCh. 6.CR - Prob. 62CRCh. 6.CR - Prob. 63CRCh. 6.CR - Prob. 64CRCh. 6.CR - Prob. 65CRCh. 6.CR - Prob. 66CRCh. 6.CR - Prob. 67CRCh. 6.CR - Prob. 68CRCh. 6.EA - In this application, we set up a mathematical...Ch. 6.EA - Prob. 2EACh. 6.EA - Prob. 3EACh. 6.EA - Prob. 4EACh. 6.EA - Prob. 5EACh. 6.EA - Prob. 6EA
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- (10) (16 points) Let R>0. Consider the truncated sphere S given as x² + y² + (z = √15R)² = R², z ≥0. where F(x, y, z) = −yi + xj . (a) (8 points) Consider the vector field V (x, y, z) = (▼ × F)(x, y, z) Think of S as a hot-air balloon where the vector field V is the velocity vector field measuring the hot gasses escaping through the porous surface S. The flux of V across S gives the volume flow rate of the gasses through S. Calculate this flux. Hint: Parametrize the boundary OS. Then use Stokes' Theorem. (b) (8 points) Calculate the surface area of the balloon. To calculate the surface area, do the following: Translate the balloon surface S by the vector (-15)k. The translated surface, call it S+ is part of the sphere x² + y²+z² = R². Why do S and S+ have the same area? ⚫ Calculate the area of S+. What is the natural spherical parametrization of S+?arrow_forward(1) (8 points) Let c(t) = (et, et sint, et cost). Reparametrize c as a unit speed curve starting from the point (1,0,1).arrow_forward(9) (16 points) Let F(x, y, z) = (x² + y − 4)i + 3xyj + (2x2 +z²)k = - = (x²+y4,3xy, 2x2 + 2²). (a) (4 points) Calculate the divergence and curl of F. (b) (6 points) Find the flux of V x F across the surface S given by x² + y²+2² = 16, z ≥ 0. (c) (6 points) Find the flux of F across the boundary of the unit cube E = [0,1] × [0,1] x [0,1].arrow_forward
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