Find the second-order partial derivative.Find fyy when f(x,y) = 8x3y - 7y2 + 2x.
A. -14
B. -28
C. 48xy
D. 24x2
Answer: A
Mathematics
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A. $2440.84 B. $3415.22 C. $2896.37 D. $1972.96
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Find the midpoint of the segment with the given endpoints.(8, 1) and (9, 5)
A. 
B. 
C. 
D. 
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Solve the inequality.
? 1
A. (-?, -10] ? (9, ?) B. [-10, 9) C. [-10, ?) D. (-?, -10] ? [9, ?)
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