Solve the inequality.
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A. ?
B.
C.
D. No solution
Answer: C
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Solve the given problem by using Laplace transforms.A constant force of 5 lb moves a 4-slug mass through a medium that resists the motion with a force equal to v, where v is the velocity. The differential equation relating the velocity of the mass to time is Find v as a function of t if the object starts from rest.
A. v = 5e-t/4
B. v = 5
C. v = 5
D. v = 5
Calculate the work done by the force F along the path C.F = xyi + 4j + 8xk; C: r(t) = cos 7ti + sin 7tj + tk, 0 ? t ?
A. W =
B. W =
C. W = 0
D. W =
Suppose that y is inversely proportional to x. Use the given information to find the constant of proportionality k. Then use y = to find y for the given value of x.y = 12.5 when x = 5;
Find y given x = 25.
A. k = 70; y = 2.8 B. k = 2.5; y = 62.5 C. k = 55; y = 2.2 D. k = 62.5; y = 2.5
Evaluate the radical expressions or indicate that the root is not a real number.
A. 14,641
B. 11
C.
D. Not a real number