Use the half-angle formulas to simplify the given expression.

A.  cos 14?
B. 2 cos 14?
C.  sin 14?
D. 2 cos 14?

Answer: D

Mathematics

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Solve the problem.Find the equation that satisfies the following conditions: = 5 + , y(1) = 15

A. y = ln |x| + 15 B. y = x + ln |x| + 14 C. y = 5x + ln |x| + 10 D. y = 5x + ln |x| + 9

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Mathematics

Rationalize the denominator and simplify.

A.
B.
C. 7
D. 7

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Mathematics

Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = 

A. f-1(x) = x3 + 1
B. f-1(x) = x3 - 1
C. Not one-to-one
D. f-1(x) = 

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Mathematics

Factor the polynomial by grouping.12x2 - 9x + 8x - 6

A. (12x + 2)(x - 3) B. (3x + 2)(4x - 3) C. (3x - 2)(4x + 3) D. (12x - 2)(x + 3)

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Mathematics