Elementary Differential Equations and Boundary Value Problems, Enhanced
11th Edition
ISBN: 9781119381648
Author: Boyce
Publisher: WILEY
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Chapter 10.5, Problem 7P
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The solution of the heat conduction problem.
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4. Direction Fields/Phase Portraits. Use the given direction fields to plot solution curves
to each of the given initial value problems.
(a)
x = x+2y
1111
y = -3x+y
with x(0) = 1, y(0) = -1
(b) Consider the initial value problem corresponding to the given phase portrait.
x = y
y' = 3x + 2y
Draw two "straight line solutions"
passing through (0,0)
(c) Make guesses for the equations of the straight line solutions: y = ax.
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Chapter 10 Solutions
Elementary Differential Equations and Boundary Value Problems, Enhanced
Ch. 10.1 - In each of Problems 1 through 13, either solve the...Ch. 10.1 - Prob. 2PCh. 10.1 - In each of Problems 1 through 13, either solve the...Ch. 10.1 - Prob. 4PCh. 10.1 - In each of Problems 1 through 13, either solve the...Ch. 10.1 - In each of Problems 1 through 13, either solve the...Ch. 10.1 - In each of Problems 1 through 13, either solve the...Ch. 10.1 - Prob. 8PCh. 10.1 - Prob. 9PCh. 10.1 - In each of Problems 1 through 13, either solve the...
Ch. 10.1 - Prob. 11PCh. 10.1 - In each of Problems 1 through 13, either solve the...Ch. 10.1 - Prob. 13PCh. 10.1 - In each of Problems 14 through 20, find the...Ch. 10.1 - In each of Problems 14 through 20, find the...Ch. 10.1 - In each of Problems 14 through 20, find the...Ch. 10.1 - Prob. 17PCh. 10.1 - In each of Problems 14 through 20, find the...Ch. 10.1 - In each of Problems 14 through 20, find the...Ch. 10.1 - The axially symmetric laminar flow of a viscous...Ch. 10.1 - Prob. 22PCh. 10.2 - In each of Problems 1 through 8, determine whether...Ch. 10.2 - Prob. 2PCh. 10.2 - Prob. 3PCh. 10.2 - Prob. 4PCh. 10.2 - In each of Problems 1 through 8, determine whether...Ch. 10.2 - In each of Problems 1 through 8, determine whether...Ch. 10.2 - In each of Problems 1 through 8, determine whether...Ch. 10.2 - Prob. 8PCh. 10.2 - Prob. 9PCh. 10.2 - Prob. 10PCh. 10.2 - Prob. 11PCh. 10.2 - Prob. 12PCh. 10.2 - In each of Problems 13 through 18:
Sketch the...Ch. 10.2 - In each of Problems 13 through 18:
Sketch the...Ch. 10.2 - Prob. 15PCh. 10.2 - Prob. 16PCh. 10.2 - In each of Problems 13 through 18:
Sketch the...Ch. 10.2 - Prob. 18PCh. 10.2 - In each of Problems 19 through 24:
Sketch the...Ch. 10.2 - Prob. 20PCh. 10.2 - Prob. 21PCh. 10.2 - Prob. 22PCh. 10.2 - Prob. 23PCh. 10.2 - Prob. 24PCh. 10.2 - Prob. 25PCh. 10.2 - Prob. 26PCh. 10.2 - Prob. 27PCh. 10.2 - Prob. 28PCh. 10.2 - Prob. 29PCh. 10.3 - In each of Problems 1 through 6, assume that the...Ch. 10.3 - Prob. 2PCh. 10.3 - Prob. 3PCh. 10.3 - In each of Problems 1 through 6, assume that the...Ch. 10.3 - Prob. 5PCh. 10.3 - Prob. 6PCh. 10.3 - Prob. 7PCh. 10.3 - Prob. 8PCh. 10.3 - Prob. 9PCh. 10.3 - Prob. 10PCh. 10.3 - Prob. 11PCh. 10.3 - Prob. 12PCh. 10.3 - Prob. 13PCh. 10.3 - Prob. 14PCh. 10.3 - Prob. 15PCh. 10.3 - Prob. 16PCh. 10.3 - Prob. 17PCh. 10.3 - Prob. 18PCh. 10.3 - Prob. 19PCh. 10.4 - Prob. 1PCh. 10.4 - Prob. 2PCh. 10.4 - Prob. 3PCh. 10.4 - Prob. 4PCh. 10.4 - Prob. 5PCh. 10.4 - Prob. 6PCh. 10.4 - Prob. 7PCh. 10.4 - Prob. 8PCh. 10.4 - Prob. 9PCh. 10.4 - Prob. 10PCh. 10.4 - Prob. 11PCh. 10.4 - Prob. 12PCh. 10.4 - Prob. 13PCh. 10.4 - Prob. 14PCh. 10.4 - Prob. 15PCh. 10.4 - Prob. 16PCh. 10.4 - Prob. 17PCh. 10.4 - Prob. 18PCh. 10.4 - Prob. 19PCh. 10.4 - Prob. 20PCh. 10.4 - Prob. 21PCh. 10.4 - Prob. 22PCh. 10.4 - Prob. 23PCh. 10.4 - Prob. 24PCh. 10.4 - Prob. 25PCh. 10.4 - Prob. 26PCh. 10.4 - Prob. 31PCh. 10.4 - Prob. 32PCh. 10.4 - Prob. 33PCh. 10.4 - Prob. 34PCh. 10.4 - Prob. 35PCh. 10.4 - Prob. 36PCh. 10.4 - Prob. 37PCh. 10.4 - Prob. 38PCh. 10.4 - Prob. 39PCh. 10.4 - Prob. 40PCh. 10.5 - In each of Problems 1 through 6, determine whether...Ch. 10.5 - In each of Problems 1 through 6, determine whether...Ch. 10.5 - In each of Problems 1 through 6, determine whether...Ch. 10.5 - In each of Problems 1 through 6, determine whether...Ch. 10.5 - In each of Problems 1 through 6, determine whether...Ch. 10.5 - In each of Problems 1 through 6, determine whether...Ch. 10.5 - Find the solution of the heat conduction problem
Ch. 10.5 - Find the solution of the heat conduction problem
Ch. 10.5 - Consider the conduction of heat in a rod 40 cm in...Ch. 10.5 - Prob. 10PCh. 10.5 - Prob. 11PCh. 10.5 - Prob. 12PCh. 10.5 - Prob. 13PCh. 10.5 - Prob. 14PCh. 10.5 - Prob. 15PCh. 10.5 - Prob. 16PCh. 10.5 - Prob. 21PCh. 10.5 - Prob. 23PCh. 10.5 - Prob. 24PCh. 10.5 - Prob. 25PCh. 10.5 - Prob. 26PCh. 10.5 - Prob. 27PCh. 10.6 - Prob. 1PCh. 10.6 - Prob. 2PCh. 10.6 - Prob. 3PCh. 10.6 - Prob. 4PCh. 10.6 - Prob. 5PCh. 10.6 - Prob. 6PCh. 10.6 - Prob. 7PCh. 10.6 - Prob. 8PCh. 10.6 - Prob. 9PCh. 10.6 - Prob. 10PCh. 10.6 - Prob. 11PCh. 10.6 - Prob. 12PCh. 10.6 - Prob. 13PCh. 10.6 - Prob. 14PCh. 10.6 - Prob. 15PCh. 10.6 - Prob. 16PCh. 10.6 - Prob. 17PCh. 10.6 - Prob. 18PCh. 10.6 - Prob. 19PCh. 10.6 - Prob. 20PCh. 10.6 - Prob. 21PCh. 10.6 - Prob. 22PCh. 10.6 - Prob. 23PCh. 10.7 - Prob. 9PCh. 10.7 - Prob. 12PCh. 10.7 - Prob. 13PCh. 10.7 - Prob. 15PCh. 10.7 - Prob. 16PCh. 10.7 - Prob. 17PCh. 10.7 - Prob. 18PCh. 10.7 - Prob. 19PCh. 10.7 - Prob. 20PCh. 10.7 - Prob. 21PCh. 10.7 - Prob. 22PCh. 10.7 - Prob. 23PCh. 10.8 - Prob. 2PCh. 10.8 - Prob. 4PCh. 10.8 - Prob. 5PCh. 10.8 - Prob. 7PCh. 10.8 - Prob. 9PCh. 10.8 - Prob. 10PCh. 10.8 - Prob. 11PCh. 10.8 - Prob. 15PCh. 10.8 - Prob. 16PCh. 10.8 - Prob. 17PCh. 10.8 - Prob. 18P
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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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