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. 
Mathematics
Solve the rational inequality.
+ 
? - 
A. [-4, -2) ? [1, 2) B. [-4, -2) ? (-2, 1] C. (-?, -4 ] ? (-2, 1] ? (2, ?) D. (-?, -2 ] ? [ 1, 2)
Mathematics
Use the fundamental identities to find the value of the trigonometric function.Find sin ? if tan ? = - 
and cos ? > 0.
A. - 
B. 
C. - 
D. - 
Mathematics
Determine the period of the function.Period of y = 7 sin 
A. 
B. 
C. 
D. 
Mathematics