Find the second-order partial derivative.Find fyx when f(x,y) = 8x3y - 7y2 + 2x.
A. -14
B. -28
C. 48xy
D. 24x2
Answer: D
Mathematics
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Solve the problem.What is the minimum force required to prevent a ball weighing 19.7 lb from rolling down a ramp which is inclined 36.4° with the horizontal? Round to the nearest tenth of a pound.
A. 5.9 lb B. 8 lb C. 15.9 lb D. 11.7 lb
Mathematics
Find two paths of approach from which one can conclude that the function has no limit as (x, y) approaches (0, 0).f(x, y) = 
What will be an ideal response?
Mathematics
Evaluate the expression.
A. 0! B. 10 C. 1 D. 45
Mathematics
Evaluate the expression for the given replacement values.x ÷ y, for x = 306 and y = 0
A. 
B. undefined
C. 0
D. 306
Mathematics