
Thomas' Calculus (14th Edition)
14th Edition
ISBN: 9780134438986
Author: Joel R. Hass, Christopher E. Heil, Maurice D. Weir
Publisher: PEARSON
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Chapter 16.2, Problem 1E
To determine
Find the gradient field of the function
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Chapter 16 Solutions
Thomas' Calculus (14th Edition)
Ch. 16.1 - Match the vector equations in Exercises 1–8 with...Ch. 16.1 - Match the vector equations in Exercises 1–8 with...Ch. 16.1 - Match the vector equations in Exercises 1–8 with...Ch. 16.1 - Match the vector equations in Exercises 1–8 with...Ch. 16.1 - Match the vector equations in Exercises 1–8 with...Ch. 16.1 - Prob. 6ECh. 16.1 - Prob. 7ECh. 16.1 - Match the vector equations in Exercises 1–8 with...Ch. 16.1 - Evaluate ∫C (x + y) ds, where C is the...Ch. 16.1 - Evaluate ∫C (x − y + z − 2) ds, where C is the...
Ch. 16.1 - Evaluate ∫C (xy + y + z) ds along the curve r(t) =...Ch. 16.1 - Evaluate along the curve r(t) = (4 cos t)i + (4...Ch. 16.1 - Prob. 13ECh. 16.1 - Find the line integral of over the curve r(t) =...Ch. 16.1 - Integrate over the path C1 followed by C2 from...Ch. 16.1 - Integrate over the path C1 followed by C2...Ch. 16.1 - Integrate f(x, y, z) = (x + y + z)/(x2 + y2 + z2)...Ch. 16.1 - Integrate over the circle r(t) = (a cos t)j + (a...Ch. 16.1 - Evaluate ∫C x ds, where C is
the straight-line...Ch. 16.1 - Evaluate , where C is
the straight-line segment x...Ch. 16.1 - Find the line integral of along the curve r(t) =...Ch. 16.1 - Find the line integral of f(x, y) = x − y + 3...Ch. 16.1 - Evaluate , where C is the curve x = t2, y = t3,...Ch. 16.1 - Find the line integral of along the curve , 1/2 ≤...Ch. 16.1 - Evaluate ,where C is given in the accompanying...Ch. 16.1 - Evaluate , where C is given in the accompanying...Ch. 16.1 - Prob. 27ECh. 16.1 - Prob. 28ECh. 16.1 - In Exercises 27–30, integrate f over the given...Ch. 16.1 - In Exercises 27–30, integrate f over the given...Ch. 16.1 - Prob. 31ECh. 16.1 - Find the area of one side of the “wall” standing...Ch. 16.1 - Mass of a wire Find the mass of a wire that lies...Ch. 16.1 - Center of mass of a curved wire A wire of density ...Ch. 16.1 - Mass of wire with variable density Find the mass...Ch. 16.1 - Center of mass of wire with variable density Find...Ch. 16.1 - Moment of inertia of wire hoop A circular wire...Ch. 16.1 - Inertia of a slender rod A slender rod of constant...Ch. 16.1 - Two springs of constant density A spring of...Ch. 16.1 - Wire of constant density A wire of constant...Ch. 16.1 - Prob. 41ECh. 16.1 - Center of mass and moments of inertia for wire...Ch. 16.2 - Find the gradient fields of the functions in...Ch. 16.2 - Find the gradient fields of the functions in...Ch. 16.2 - Prob. 3ECh. 16.2 - Prob. 4ECh. 16.2 - Prob. 5ECh. 16.2 - Prob. 6ECh. 16.2 - In Exercises 7−12, find the line integrals of F...Ch. 16.2 - Prob. 8ECh. 16.2 - In Exercises 7−12, find the line integrals of F...Ch. 16.2 - In Exercises 7−12, find the line integrals of F...Ch. 16.2 - Prob. 11ECh. 16.2 - Line Integrals of Vector Fields
In Exercises 7−12,...Ch. 16.2 - In Exercises 13–16, find the line integrals along...Ch. 16.2 - In Exercises 13–16, find the line integrals along...Ch. 16.2 - In Exercises 13–16, find the line integrals along...Ch. 16.2 - In Exercises 13–16, find the line integrals along...Ch. 16.2 - Prob. 17ECh. 16.2 - Along the curve , , evaluate each of the following...Ch. 16.2 - In Exercises 19–22, find the work done by F over...Ch. 16.2 - In Exercises 19–22, find the work done by F over...Ch. 16.2 - In Exercises 19–22, find the work done by F over...Ch. 16.2 - In Exercises 19–22, find the work done by F over...Ch. 16.2 - Evaluate along the curve from (–1, 1) to (2,...Ch. 16.2 - Prob. 24ECh. 16.2 - Evaluate for the vector field along the curve ...Ch. 16.2 - Prob. 26ECh. 16.2 - Prob. 27ECh. 16.2 - Prob. 28ECh. 16.2 - Circulation and flux Find the circulation and flux...Ch. 16.2 - Flux across a circle Find the flux of the...Ch. 16.2 - Prob. 31ECh. 16.2 - In Exercises 31–34, find the circulation and flux...Ch. 16.2 - In Exercises 31–34, find the circulation and flux...Ch. 16.2 - In Exercises 31–34, find the circulation and flux...Ch. 16.2 - Flow integrals Find the flow of the velocity field...Ch. 16.2 - Flux across a triangle Find the flux of the field...Ch. 16.2 - Prob. 37ECh. 16.2 - The flow of a gas with a density of over the...Ch. 16.2 - Find the flow of the velocity field F = y2i + 2xyj...Ch. 16.2 - Prob. 40ECh. 16.2 - Prob. 41ECh. 16.2 - Prob. 42ECh. 16.2 - Prob. 43ECh. 16.2 - Prob. 44ECh. 16.2 - Prob. 45ECh. 16.2 - Prob. 46ECh. 16.2 - Prob. 47ECh. 16.2 - Prob. 48ECh. 16.2 - A field of tangent vectors
Find a field G = P(x,...Ch. 16.2 - A field of tangent vectors
Find a field G = P(x,...Ch. 16.2 - Unit vectors pointing toward the origin Find a...Ch. 16.2 - Prob. 52ECh. 16.2 - Prob. 53ECh. 16.2 - Prob. 54ECh. 16.2 - Prob. 55ECh. 16.2 - Prob. 56ECh. 16.2 - In Exercises 55–58, F is the velocity field of a...Ch. 16.2 - In Exercises 55–58, F is the velocity field of a...Ch. 16.2 - Circulation Find the circulation of F = 2xi + 2zj...Ch. 16.2 - Prob. 60ECh. 16.2 - Flow along a curve The field F = xyi + yj − yzk is...Ch. 16.2 - Flow of a gradient field Find the flow of the...Ch. 16.3 - Which fields in Exercises 1–6 are conservative,...Ch. 16.3 - Which fields in Exercises 1–6 are conservative,...Ch. 16.3 - Which fields in Exercises 1–6 are conservative,...Ch. 16.3 - Which fields in Exercises 1–6 are conservative,...Ch. 16.3 - Which fields in Exercises 1−6 are conservative,...Ch. 16.3 - Which fields in Exercises 1−6 are conservative,...Ch. 16.3 - Finding Potential Functions
In Exercises 7–12,...Ch. 16.3 -
In Exercises 7–12, find a potential function f...Ch. 16.3 - In Exercises 7–12, find a potential function f for...Ch. 16.3 - In Exercises 7–12, find a potential function f for...Ch. 16.3 - In Exercises 7–12, find a potential function f for...Ch. 16.3 - In Exercises 7–12, find a potential function f for...Ch. 16.3 - Prob. 13ECh. 16.3 - In Exercises 13–17, show that the differential...Ch. 16.3 - Prob. 15ECh. 16.3 - In Exercises 13–17, show that the differential...Ch. 16.3 - In Exercises 13–17, show that the differential...Ch. 16.3 - Prob. 18ECh. 16.3 -
Although they are not defined on all of space R3,...Ch. 16.3 - Although they are not defined on all of space R3,...Ch. 16.3 - Prob. 21ECh. 16.3 - Prob. 22ECh. 16.3 - Prob. 23ECh. 16.3 - Evaluate
along the line segment C joining (0, 0,...Ch. 16.3 - Independence of path Show that the values of the...Ch. 16.3 - Prob. 26ECh. 16.3 - Prob. 27ECh. 16.3 - In Exercises 27 and 28, find a potential function...Ch. 16.3 - Work along different paths Find the work done by F...Ch. 16.3 - Work along different paths Find the work done by F...Ch. 16.3 - Evaluating a work integral two ways Let F =...Ch. 16.3 - Integral along different paths Evaluate the line...Ch. 16.3 - Exact differential form How are the constants a,...Ch. 16.3 - Prob. 34ECh. 16.3 - Prob. 35ECh. 16.3 - Prob. 36ECh. 16.3 - Prob. 37ECh. 16.3 - Gravitational field
Find a potential function for...Ch. 16.4 - In Exercises 1–6, find the k-component of curl(F)...Ch. 16.4 - Prob. 2ECh. 16.4 - In Exercises 1–6, find the k-component of curl(F)...Ch. 16.4 - Prob. 4ECh. 16.4 - Prob. 5ECh. 16.4 - In Exercises 1–6, find the k-component of curl(F)...Ch. 16.4 - In Exercises 7–10, verify the conclusion of...Ch. 16.4 - In Exercises 7–10, verify the conclusion of...Ch. 16.4 - In Exercises 7–10, verify the conclusion of...Ch. 16.4 - In Exercises 7–10, verify the conclusion of...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - In Exercises 11–20, use Green’s Theorem to find...Ch. 16.4 - Prob. 20ECh. 16.4 - Find the counterclockwise circulation and outward...Ch. 16.4 - Find the counterclockwise circulation and the...Ch. 16.4 - Prob. 23ECh. 16.4 - Find the counterclockwise circulation of around...Ch. 16.4 - In Exercises 25 and 26, find the work done by F in...Ch. 16.4 - Prob. 26ECh. 16.4 - Apply Green’s Theorem to evaluate the integrals in...Ch. 16.4 - Apply Green’s Theorem to evaluate the integrals in...Ch. 16.4 - Apply Green’s Theorem to evaluate the integrals in...Ch. 16.4 - Prob. 30ECh. 16.4 - Prob. 31ECh. 16.4 - Prob. 32ECh. 16.4 - Use the Green’s Theorem area formula given above...Ch. 16.4 - Prob. 34ECh. 16.4 - Prob. 35ECh. 16.4 - Integral dependent only on area Show that the...Ch. 16.4 - Evaluate the integral
for any closed path C.
Ch. 16.4 - Evaluate the integral
for any closed path C.
Ch. 16.4 - Prob. 39ECh. 16.4 - Definite integral as a line integral Suppose that...Ch. 16.4 - Prob. 41ECh. 16.4 - Prob. 42ECh. 16.4 - Green’s Theorem and Laplace’s equation Assuming...Ch. 16.4 - Maximizing work Among all smooth, simple closed...Ch. 16.4 - Regions with many holes Green’s Theorem holds for...Ch. 16.4 - Prob. 46ECh. 16.4 - Prob. 47ECh. 16.4 - Prob. 48ECh. 16.5 - In Exercises 1–16, find a parametrization of the...Ch. 16.5 - In Exercises 1–16, find a parametrization of the...Ch. 16.5 - In Exercises 1–16, find a parametrization of the...Ch. 16.5 - In Exercises 1–16, find a parametrization of the...Ch. 16.5 - Prob. 5ECh. 16.5 - Prob. 6ECh. 16.5 - Prob. 7ECh. 16.5 - In Exercises 1–16, find a parametrization of the...Ch. 16.5 - Prob. 9ECh. 16.5 - Prob. 10ECh. 16.5 - Prob. 11ECh. 16.5 - Prob. 12ECh. 16.5 - Prob. 13ECh. 16.5 - In Exercises 1–16, find a parametrization of the...Ch. 16.5 - Prob. 15ECh. 16.5 - Prob. 16ECh. 16.5 - In Exercises 17–26, use a parametrization to...Ch. 16.5 - In Exercises 17–26, use a parametrization to...Ch. 16.5 - Prob. 19ECh. 16.5 - Prob. 20ECh. 16.5 - Prob. 21ECh. 16.5 - Prob. 22ECh. 16.5 - Prob. 23ECh. 16.5 - In Exercises 17–26, use a parametrization to...Ch. 16.5 - In Exercises 17–26, use a parametrization to...Ch. 16.5 - In Exercises 17–26, use a parametrization to...Ch. 16.5 - Prob. 27ECh. 16.5 - Prob. 28ECh. 16.5 - Prob. 29ECh. 16.5 - Prob. 30ECh. 16.5 - A torus of revolution (doughnut) is obtained by...Ch. 16.5 - Prob. 32ECh. 16.5 - Prob. 33ECh. 16.5 - Prob. 34ECh. 16.5 - Prob. 35ECh. 16.5 - Prob. 36ECh. 16.5 - Find the area of the surface cut from the...Ch. 16.5 - Find the area of the band cut from the paraboloid...Ch. 16.5 - Find the area of the region cut from the plane x +...Ch. 16.5 - Find the area of the portion of the surface x2 –...Ch. 16.5 - Prob. 41ECh. 16.5 - Prob. 42ECh. 16.5 - Find the area of the ellipse cut from the plane z...Ch. 16.5 - Find the area of the upper portion of the cylinder...Ch. 16.5 - Prob. 45ECh. 16.5 - Prob. 46ECh. 16.5 - Prob. 47ECh. 16.5 - Find the area of the surface 2x3/2 + 2y3/2 – 3z =...Ch. 16.5 - Prob. 49ECh. 16.5 - Prob. 50ECh. 16.5 - Prob. 51ECh. 16.5 - Prob. 52ECh. 16.5 - Prob. 53ECh. 16.5 - Find the area of the surfaces in Exercises...Ch. 16.5 - Use the parametrization
and Equation (5) to...Ch. 16.5 - Prob. 56ECh. 16.6 - In Exercises 1–8, integrate the given function...Ch. 16.6 - In Exercises 1–8, integrate the given function...Ch. 16.6 - In Exercises 1–8, integrate the given function...Ch. 16.6 - In Exercises 1–8, integrate the given function...Ch. 16.6 - Prob. 5ECh. 16.6 - Prob. 6ECh. 16.6 - Prob. 7ECh. 16.6 - In Exercises 1–8, integrate the given function...Ch. 16.6 - Integrate G(x, y, z) = x + y + z over the surface...Ch. 16.6 - Integrate G(x, y, z) = y + z over the surface of...Ch. 16.6 - Prob. 11ECh. 16.6 - Prob. 12ECh. 16.6 - Integrate G(x, y, z) = x + y + z over the portion...Ch. 16.6 - Prob. 14ECh. 16.6 - Prob. 15ECh. 16.6 - Prob. 16ECh. 16.6 - Prob. 17ECh. 16.6 - Prob. 18ECh. 16.6 - In Exercises 19–28, use a parametrization to find...Ch. 16.6 - In Exercises 19–28, use a parametrization to find...Ch. 16.6 - Prob. 21ECh. 16.6 - Prob. 22ECh. 16.6 - Prob. 23ECh. 16.6 - Prob. 24ECh. 16.6 - In Exercises 19–28, use a parametrization to find...Ch. 16.6 - In Exercises 19–28, use a parametrization to find...Ch. 16.6 - In Exercises 19–28, use a parametrization to find...Ch. 16.6 - Prob. 28ECh. 16.6 - Prob. 29ECh. 16.6 - Prob. 30ECh. 16.6 - In Exercises 31–36, use Equation (7) to find the...Ch. 16.6 - Prob. 32ECh. 16.6 - Prob. 33ECh. 16.6 - Prob. 34ECh. 16.6 - Prob. 35ECh. 16.6 - In Exercises 31–36, use Equation (7) to find the...Ch. 16.6 - Find the flux of the field through the surface...Ch. 16.6 - Find the flux of the field F(x, y, z) = 4xi + 4yj...Ch. 16.6 - Let S be the portion of the cylinder y = ex in the...Ch. 16.6 - Let S be the portion of the cylinder y = ln x in...Ch. 16.6 - Find the outward flux of the field F = 2xyi+ 2yzj...Ch. 16.6 - Find the outward flux of the field F = xzi + yzj +...Ch. 16.6 - Prob. 43ECh. 16.6 - Prob. 44ECh. 16.6 - Prob. 45ECh. 16.6 - Conical surface of constant density Find the...Ch. 16.6 - Prob. 47ECh. 16.6 - Prob. 48ECh. 16.6 - Prob. 49ECh. 16.6 - A surface S lies on the paraboloid directly above...Ch. 16.7 - In Exercises 1–6, find the curl of each vector...Ch. 16.7 - Prob. 2ECh. 16.7 - In Exercises 1–6, find the curl of each vector...Ch. 16.7 - Prob. 4ECh. 16.7 - Prob. 5ECh. 16.7 - Prob. 6ECh. 16.7 - In Exercises 7–12, use the surface integral in...Ch. 16.7 - Prob. 8ECh. 16.7 - In Exercises 7–12, use the surface integral in...Ch. 16.7 - Prob. 10ECh. 16.7 - In Exercises 7–12, use the surface integral in...Ch. 16.7 - In Exercises 7–12, use the surface integral in...Ch. 16.7 - Let n be the unit normal in the direction away...Ch. 16.7 - Prob. 14ECh. 16.7 - Prob. 15ECh. 16.7 - Prob. 16ECh. 16.7 - Prob. 17ECh. 16.7 - Prob. 18ECh. 16.7 - In Exercises 19–24, use the surface integral in...Ch. 16.7 - In Exercises 19–24, use the surface integral in...Ch. 16.7 - In Exercises 19–24, use the surface integral in...Ch. 16.7 - Prob. 22ECh. 16.7 - Prob. 23ECh. 16.7 - In Exercises 19–24, use the surface integral in...Ch. 16.7 - Prob. 25ECh. 16.7 - Verify Stokes’ Theorem for the vector field F =...Ch. 16.7 - Prob. 27ECh. 16.7 - Prob. 28ECh. 16.7 - Prob. 29ECh. 16.7 - Prob. 30ECh. 16.7 - Prob. 31ECh. 16.7 - Prob. 32ECh. 16.7 - Prob. 33ECh. 16.7 - Prob. 34ECh. 16.8 - In Exercises 1–8, find the divergence of the...Ch. 16.8 - Prob. 2ECh. 16.8 - Prob. 3ECh. 16.8 - Prob. 4ECh. 16.8 - Prob. 5ECh. 16.8 - Prob. 6ECh. 16.8 - Prob. 7ECh. 16.8 - Prob. 8ECh. 16.8 - In Exercises 9–20, use the Divergence Theorem to...Ch. 16.8 - In Exercises 9–20, use the Divergence Theorem to...Ch. 16.8 - In Exercises 9–20, use the Divergence Theorem to...Ch. 16.8 - In Exercises 9–20, use the Divergence Theorem to...Ch. 16.8 - Prob. 13ECh. 16.8 - Prob. 14ECh. 16.8 - Prob. 15ECh. 16.8 - Prob. 16ECh. 16.8 - Prob. 17ECh. 16.8 - Prob. 18ECh. 16.8 - Prob. 19ECh. 16.8 - In Exercises 9–20, use the Divergence Theorem to...Ch. 16.8 - Prob. 21ECh. 16.8 - Prob. 22ECh. 16.8 - Prob. 23ECh. 16.8 - Prob. 24ECh. 16.8 - Prob. 25ECh. 16.8 - Prob. 26ECh. 16.8 - Prob. 27ECh. 16.8 - Prob. 28ECh. 16.8 - Prob. 29ECh. 16.8 - Prob. 30ECh. 16.8 - Prob. 31ECh. 16.8 - Prob. 32ECh. 16.8 - Prob. 33ECh. 16.8 - Prob. 34ECh. 16.8 - Prob. 35ECh. 16.8 - Prob. 36ECh. 16 - Prob. 1GYRCh. 16 - How can you use line integrals to find the centers...Ch. 16 - Prob. 3GYRCh. 16 - Prob. 4GYRCh. 16 - Prob. 5GYRCh. 16 - Prob. 6GYRCh. 16 - Prob. 7GYRCh. 16 - Prob. 8GYRCh. 16 - Prob. 9GYRCh. 16 - Prob. 10GYRCh. 16 - How do you calculate the area of a parametrized...Ch. 16 - Prob. 12GYRCh. 16 - What is an oriented surface? What is the surface...Ch. 16 - Prob. 14GYRCh. 16 - Prob. 15GYRCh. 16 - Prob. 16GYRCh. 16 - Prob. 17GYRCh. 16 - Prob. 18GYRCh. 16 - The accompanying figure shows two polygonal paths...Ch. 16 - The accompanying figure shows three polygonal...Ch. 16 - Integrate over the circle r(t) = (a cos t)j + (a...Ch. 16 - Prob. 4PECh. 16 - Evaluate the integrals in Exercises 5 and 6.
5.
Ch. 16 - Prob. 6PECh. 16 - Prob. 7PECh. 16 - Integrate F = 3x2yi + (x3 + l)j + 9z2k around the...Ch. 16 - Prob. 9PECh. 16 - Evaluate the integrals in Exercises 9 and...Ch. 16 - Prob. 11PECh. 16 - Prob. 12PECh. 16 - Prob. 13PECh. 16 - Hemisphere cut by cylinder Find the area of the...Ch. 16 - Prob. 15PECh. 16 - Prob. 16PECh. 16 - Circular cylinder cut by planes Integrate g(x, y,...Ch. 16 - Prob. 18PECh. 16 - Prob. 19PECh. 16 - Prob. 20PECh. 16 - Prob. 21PECh. 16 - Prob. 22PECh. 16 - Prob. 23PECh. 16 - Prob. 24PECh. 16 - Prob. 25PECh. 16 - Prob. 26PECh. 16 - Prob. 27PECh. 16 - Prob. 28PECh. 16 - Which of the fields in Exercises 29–32 are...Ch. 16 - Prob. 30PECh. 16 - Which of the fields in Exercises 29–32 are...Ch. 16 - Prob. 32PECh. 16 - Prob. 33PECh. 16 - Prob. 34PECh. 16 - In Exercises 35 and 36, find the work done by each...Ch. 16 - In Exercises 35 and 36, find the work done by each...Ch. 16 - Finding work in two ways Find the work done...Ch. 16 - Flow along different paths Find the flow of the...Ch. 16 - Prob. 39PECh. 16 - Prob. 40PECh. 16 - Prob. 41PECh. 16 - Prob. 42PECh. 16 - Prob. 43PECh. 16 - Prob. 44PECh. 16 - Prob. 45PECh. 16 - Prob. 46PECh. 16 - Prob. 47PECh. 16 - Moment of inertia of a cube Find the moment of...Ch. 16 - Use Green’s Theorem to find the counterclockwise...Ch. 16 - Prob. 50PECh. 16 - Prob. 51PECh. 16 - Prob. 52PECh. 16 - In Exercises 53–56, find the outward flux of F...Ch. 16 - In Exercises 53–56, find the outward flux of F...Ch. 16 - Prob. 55PECh. 16 - Prob. 56PECh. 16 - Prob. 57PECh. 16 - Prob. 58PECh. 16 - Prob. 59PECh. 16 - Prob. 60PECh. 16 - Prob. 1AAECh. 16 - Use the Green’s Theorem area formula in Exercises...Ch. 16 - Prob. 3AAECh. 16 - Use the Green's Theorem area formula in Exercises...Ch. 16 - Prob. 5AAECh. 16 - Prob. 6AAECh. 16 - Prob. 7AAECh. 16 - Prob. 8AAECh. 16 - Prob. 9AAECh. 16 - Prob. 10AAECh. 16 - Prob. 11AAECh. 16 - Prob. 12AAECh. 16 - Archimedes’ principle If an object such as a ball...Ch. 16 - Prob. 14AAECh. 16 - Faraday’s law If E(t, x, y, z) and B(t, x, y, z)...Ch. 16 - Prob. 16AAECh. 16 - Prob. 17AAECh. 16 - Prob. 18AAECh. 16 - Prob. 19AAECh. 16 - Prob. 20AAECh. 16 - Prob. 21AAE
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- Distance Between Two Ships Two ships leave the same port at noon. Ship A sails north at 17 mph, and ship B sails east at 11 mph. How fast is the distance between them changing at 1 p.m.? (Round your answer to one decimal place.) 20.3 X mph Need Help? Read It Watch It SUBMIT ANSWERarrow_forwardpractice problem please help!arrow_forwardFind the first and second derivatives of the function. f(u) = √7 3u − 3 f'(u) 2 (7-34) (½) f"(u) = 9 4(7-3u) 32 X Need Help? Read It Watch It SUBMIT ANSWERarrow_forward
- 11. Consider the 2nd-order non-homogeneous differential equation y′′ − 4y′ + 3y = et + t2What is the complementary (or homogeneous) solution?A. yc = c1e^t + c2t^2 B. yc = c1e^−t + c2e^−3t C. yc = c1e^t + c2e^3t D. yc = c1e^t + c2e^−3tarrow_forward5. A trial solution for the non-homogeneous equation y′′ + y′ − 2y = e^x isA. Ae^x B. Ae^x+ Be^−2x C. Ae^x + Be^−x D. Axe^x E. None of these.arrow_forward14. Write u = - sint-cost in the form u = C cos(t - a) with C > 0 and 0 ? PAUSE Z X C VI B N Marrow_forward
- 19. If the method of undetermined coefficients is used, the form of a particular solution ofy^(4) − y = e^−t + 3 sin(t) isA. yp(t) = Ate^−t + B cos(t) + C sin(t)B. yp(t) = At^2e^−t + B cos(t) + C sin(t)C. yp(t) = Ate^−t + Bt cos(t) + Ct sin(t)D. yp(t) = At^2e^−t + Bt cos(t) + Ct sin(t)E. yp(t) = Ate^−t + Bt sin(t)arrow_forward15. A spring-mass system is governed by the differential equation 2x′′ + 72x = 100 sin(3ωt) .For what value of ω will resonance occur?A. 3 B. 6√2 C. 2 D. 10 E. No valuearrow_forwardQuestion 3. A manufacturer has modeled its yearly production function P (the value of its entire production, in millions of dollars) as a Cobb-Douglas function P(L, K) = 1.47L0.65 0.35 where L is the number of labor hours (in thousands) and K is the invested capital (in millions of dollars). ӘР Ət (a) Express the rate of change of production 07-2 in time, in terms of the rate of change of the labor force and the rate of change of the capital in time. (b) Suppose that when L = 30 and K = 8, the labor force is decreasing at a rate of 2000 labor hours per year and capital is increasing at a rate of 500,000 per year. What is the rate of change of production per year?arrow_forward
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