Find the exact value of the indicated trigonometric function of ?.cos ? = 
, tan ? < 0Find sin ?.
A. -
B. - 
C. - 
D. - 
Answer: D
Mathematics
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Solve the problem.If f(x) is a differentiable function and f ' (c) = 0 at an interior point c of f's domain, and if 
for all x in the domain, must f have a local minimum at x = c? Explain.
What will be an ideal response?
Mathematics
Evaluate.6 ? 23
A. 14 B. 48 C. 36 D. 1728
Mathematics
Convert to an exponential equation.log2T9 = 7
A. 27 = T9 B. 7T9 = 2 C. 72 = T9 D. 2T9 = 7
Mathematics
Locate and classify all critical points for the given function.f(x,y) = x3 - 5xy + y3Only find the critical points for this function.Do not test for maximum or minimum.
A. (0, 0)
B. 
C. (0, 0) and 
D. There are no critical points.
Mathematics