Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.3 sin2 x cos2 x
A. 
sin 2x
B. 
- 
cos 4x
C. 
- 
cos 2x
D. 
- 
cos 4x
Answer: D
Mathematics
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Evaluate the given integral by using three terms of the appropriate series, rounding the result to four decimal places.
A. 0.2859 B. 0.2546 C. 0.2072 D. 0.2318
Mathematics
Find the domain of the rational expression. 
A. {x|x is a real number and x ? 1 and x ? 7} B. {x|x is a real number and x ? -1 and x ? -7} C. {x|x is a real number and x ? 1 and x ? -7 and x ? 7} D. {x|x is a real number and x ? -1 and x ? -7 and x ? 7}
Mathematics
Factor the perfect square trinomial.x2 + 4x + 4
A. (x + 2)(x - 2) B. (x + 2)2 C. (x - 2)2 D. prime
Mathematics
Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Mathematics