Solve the problem.Determine a polynomial that represents the area of the figure. Leave ? in the answer.
A. 4?x2 + 9?
B. 4x2 + 9
C. 4?x2 + 12?x + 9?
D. 4x2 + 12x + 9
Answer: C
Mathematics
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Find the potential function f for the field F.F = (ey2 - sin x)i + 2xyey2j + k
A. f(x, y, z) = cos x + xey2 + z + C B. f(x, y, z) = cos x + ey2 + z + C C. f(x, y, z) = cos x + xzey2 + C D. f(x, y, z) = cos x + ey2(x + z) + C
Mathematics
The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). s (m)
When is the body moving backward?
A. 8 < t ? 10 B. 2 < t < 3, 4 < t < 5, 7 < t < 8 C. 2 < t < 3, 4 < t < 5, 7 < t < 9 D. 8 < t < 9
Mathematics
Find the limit.
A. 81 B. 9 C. does not exist D. ±9
Mathematics
Name the quadrant in which the angle ? lies.sec ? < 0, tan ? < 0
A. I B. II C. III D. IV
Mathematics