State the solution set to the inequality by reading the graph.
> 0
y = 
A. (3, 6) ? (6, ?)
B. (-?, 6) ? (6, ?)
C. (-?, 3) ? (6, ?)
D. (6, ?)
Answer: C
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Find all the second order partial derivatives of the given function.f(x, y) = cos (xy2)
A. 
= - y2 sin xy2; 
= 2y
; 
= 
= 2
B. 
= - y2 sin xy2; 
= 2[ sin (xy2)- 2y2 cos (xy2)] ; 
= 
= 2y [sin (xy2)-y2 cos (xy2)]
C. 
= -y4 cos xy2; 
= - 2x[2xy2 cos (xy2) + sin(xy2)]; 
= 
=
- 2y[xy2 cos (xy2) + sin(xy2)];
D. 
= y2 sin xy2; 
= 2[2y2 cos (xy2) - sin (xy2)] ; 
= 
= 2y[y2 cos (xy2) - sin (xy2)]
Evaluate.(-4)3
A. 64 B. 12 C. -12 D. -64
Use the quadratic formula to solve the quadratic equation.2x2 + 10x = -4
A. x = 
B. x = 
C. x = 
D. x = 
Find the domain and range of the relation.
A. domain: (-?, ?), range: (-?, 5] B. domain: (-?, ?), range: (-?, ?) C. domain: (-?, -2) or (-2, ?), range: (-?, 5] D. domain: (-?, -2], range: (-?, 5]