Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.

A.

B.

C.

D.


Answer: D

Mathematics

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Use logarithmic differentiation to find the derivative of y.y = sin x

A. sin x
B. sin x
C. sin x
D.

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Solve the rational inequality. +  ? - 

A. [-4, -2) ? [1, 2) B. [-4, -2) ? (-2, 1] C. (-?, -4 ] ? (-2, 1] ? (2, ?) D. (-?, -2 ] ? [ 1, 2)

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Use the fundamental identities to find the value of the trigonometric function.Find sin ? if tan ? = -  and cos ? > 0.

A. - 
B.
C. - 
D. - 

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Determine the period of the function.Period of y = 7 sin 

A.
B.
C.
D.

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