Decide if the given equation is a solution of the given differential equation.
= 2xy2, y = - 
A. Yes
B. No
Answer: A
Mathematics
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Solve the problem.A 60-m-long, 8.4-mm-diameter rope hangs free from a ledge. The density of the rope is 60 g/m. How much work is needed to pull the entire rope to the ledge?
A. 108g J B. 9g J C. 108,000g J D. 3.6g J
Mathematics
Evaluate the line integral along the curve C.
ds , C is the straight-line segment x = 0, y = 5 - t, z = t from (0, 5, 0) to 
A. 25
B. 25
C. 
D. 0
Mathematics
Evaluate the expression.271/3
A. 9 B. 81 C. 243 D. 3
Mathematics
Solve the inequality. Graph the solution set and write the solution set in set-builder notation.x2 - 4x - 5 < 0
A. {x|x < -1 or x > 5}
B. {x|-1 < x < 5}
C. {x|x < -1}
D. {x|x > 5}
Mathematics