Find the product.(x + y)(x2 - xy + y2)
A. x3 + y3
B. x3 - y3
C. x3 - 2x2y - 2xy2 + y3
D. x3 + 2x2y + 2xy2 + y3
Answer: A
Mathematics
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Solve the given differential equation.
+ 16y = 0
A. y = c1 sin 4x + c2 cos 4x B. y = (c1 + c2x)e-4x C. y = c1 sin 4x + c2x cos 4x D. y = (c1 + c2x)e4x
Mathematics
Find all the second order partial derivatives of the given function.f(x, y) = ex/y
A. 
= 
; 
= 
; 
= 
= 
B. 
= 
; 
= ex/y
;; 
= 
= -ex/y
C. 
= 
; 
= ex/y
; 
= 
= -ex/y
D. 
= 
; 
= -ex/y
;; 
= 
= ex/y
Mathematics
Evaluate the function.
If y = f(x), find f(1).
A. 1 B. 0 C. -2 D. 2
Mathematics
Solve the problem.The matrices give points and rebounds for five starting players in two games. Find the matrix that gives the totals.
A. 
B. 
C. 
D. 
Mathematics