Solve over the interval [0, 2?).f(x) = cos2 x - sin2 x - 1, f(x) > 0
A. 
? 
? 
B. [0, 2?)
C. ?
D. (0, ?) ? (?, 2?)
Answer: C
Mathematics
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Determine whether or not the function is one-to-one.
A. No B. Yes
Mathematics
Refer to the double-bar graph below which shows the number of male and female athletes at a university over a four-year period. Solve the problem.
Find the increase in the number of male athletes from 2004 to 2005.
A. 50 B. 475 C. 100 D. 75
Mathematics
Write 
and 
in trigonometric form and find their product.
?
?
A. ?
B. 
C. ?
D. ?
E. ?
Mathematics
Factor the polynomial completely.r2 - 4r + 4 - s2
A. (r - 2 + s)(r + 2 + s) B. (r - 4 + s)(r + 4 - s) C. (r - 2 + s)(r - 2 - s) D. (r + 2 + s)(r + 2 - s)
Mathematics