Find the second-order partial derivative.Find fyx when f(x, y) = ln(2x + 9y).
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Translate each graph to an inequality using the variable x.
A. x ? -8 B. x > -8 C. x < -8 D. x ? -8
Mathematics
Find the equation of the parabola which has the given vertex V, which passes through the given point P, and which has the specified axis of symmetry.V(1, -2), P(0, -1), horizontal axis of symmetry
A. (y+ 2)2 = x - 1 B. (x+ 2)2 = -(y - 1) C. (y+ 2)2 = x + 1 D. (y+ 2)2 = -(x - 1)
Mathematics
Simplify. Assume that all variables represent nonnegative numbers.
A. 108x
B. 6x
C. 6
D. 3x2 
Mathematics
In the previous problem, the function x can be written as Select the correct answer. ?
A. 
B. 
C. 
D. 
E. 
Mathematics