Find fx, fy, and fz.f(x, y, z) = cos x sin2 (yz)
A. fx = sin x sin2 (yz); fy = -2z cos x sin (yz) cos (yz); fz = - 2y cos x sin (yz) cos (yz)
B. fx = sin x sin2 (yz); fy = - cos x sin (yz) cos (yz); fz = -cos x sin (yz) cos (yz)
C. fx = -sin x sin2 (yz); fy = 2z cos x sin (yz) cos (yz); fz = 2y cos x sin (yz) cos (yz)
D. fx = -sin x sin2 (yz); fy = z cos x sin (yz) cos (yz); fz = y cos x sin (yz) cos (yz)
Answer: C
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Solve the problem.Find the length of the curve 
between x = 0 and x = 3.
A. ?
B. 
?
C. 
?
D. 2?
Evaluate the integral.
A. 2
+ C
B. 2
+ 3 ln 
+ C
C. 2
- 3 ln 
+ C
D. 2
+ 3 tan-1 
+ C
Indicate whether the graph of the equation is a circle, an ellipse, a hyperbola, or a parabola. Then graph the conic section.x = 7 + (y + 5)2
A. hyperbola
B. parabola
C. ellipse
D. circle
Find the zeros of the polynomial function and state the multiplicity of each.f(x) = x4 - 34x2 + 225
A. x = 25, multiplicity 2; x = 9, multiplicity 2 B. x = -5, multiplicity 1; x = 5, multiplicity 1; x = -3, multiplicity 1; x = 3, multiplicity 1 C. x = 25, multiplicity 1; x = 9, multiplicity 1 D. x = 25, multiplicity 2; x = 3, multiplicity 1