Find the partial derivative.f(x, y) = 7x - 10y2 - 9. Find fx(x, y).
A. 7
B. -2
C. 7x
D. -20y
Answer: A
Mathematics
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Sketch the indicated line.Two electric currents I and J (in mA), in part of a circuit in a computer are related by the equation 
. Sketch J as a function of I. These currents can be negative.
A. 
B. 
C. 
D. 
Mathematics
Solve.(r + 3)2 = 13
A. 3 + 
, 3 - 
B. 
, -
C. -3 + 
, -3 - 
D. 10
Mathematics
Multiply.(2x + 0.5)(2x - 0.5)
A. 4x2 - 0.25 B. 4x2 - 1 C. 4x2 - 2x- 0.25 D. 4x2 - 2.5
Mathematics
Determine whether or not the function is one-to-one.f(x) = 8x3 - 1
A. Yes B. No
Mathematics