Use the power-reducing identities to rewrite the expression that does not contain trigonometric functions of power greater than 1.sin x (2 cos2 x - 1)
A. sinx cos 2x
B. sin 2x
C. cos 2x
D. cos x sin 2x
Answer: A
Mathematics
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a function? Why or why not?
What will be an ideal response?
Mathematics
Multiply.(x - 6y)(x - 12y)
A. x2 - 18xy - 18y2 B. x2 - 18xy + 72y2 C. x - 18xy + 72y D. x2 - 21xy + 72y2
Mathematics
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Mathematics
Use the quadratic formula to solve the equation. (All solutions are real numbers.)4n2 = -12n - 3
A. 
B. 
C. 
D. 
Mathematics