Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (cos x)x

A. ln x(cos x)x - 1
B. (cos x)x (ln cos x - x tan x)
C. (cos x)x (ln cos x + x cot x)
D. ln cos x - x tan x


Answer: B

Mathematics

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Evaluate the integral by changing the order of integration in an appropriate way.

A.
B.
C.
D.

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For the function f whose graph is given, determine the limit.Findf(x).

A. -1
B.
C. 2
D. does not exist

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Write the inequality using interval notation. Graph the inequality.2 < x ? 6

A. [2, 6)

B. (2, 6)

C. [2, 6]

D. (2, 6]

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Factor, if possible.x2 - 20x + 400

A. Prime polynomial B. (x + 20)(x - 20) C. (x - 20)2 D. (x + 20)2

Mathematics