Find the partial derivative.Find fx(2, -5) when f(x, y) = 4x3 - 2xy - y.
A. 9
B. 57
C. 10
D. 58
Answer: D
Mathematics
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Use your calculator to solve the problem.The length (in feet) an industrial spring is stretched from its natural length with work, W
is given by L = 
, where k is a constant for the given spring. If a certain spring has a constant of 67.6 and has 287 foot-pounds of work applied, how far will it stretch?
A. 2.06 feet B. 8.49 feet C. 72.1 feet D. 2.91 feet
Mathematics
Decide whether the figure is convex or concave.
A. Concave B. Convex
Mathematics
Determine whether the function is one-to-one.f(x) = 8x - 6
A. Yes B. No
Mathematics
State the end behavior of the graph of f.f(x) = 0.2x5 - 4x2 + 2
A. Down on both sides B. Up on both sides C. Up on left side, down on right side D. Down on left side, up on right side
Mathematics