Perform the indicated operation. Write the answer in simplest form.
? 
? 
A. 
B. 
C. 
D. 
Answer: B
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Find at least three nonzero terms [including a0, at least two cosine terms (if they are not all zero) and at least two sine terms (if they are not all zero)] of the Fourier series for the given function.f(x) = 
A. f(x) = 1 - 
+ 
(sin x - sin 2x + . . .)
B. f(x) = 1 - 
+ 
(sin x - sin 2x + . . .)
C. f(x) = 2 - 
+ 
(sin x - sin 2x + . . .)
D. f(x) = 2 - 
+ 
(sin x - sin 2x + . . .)
Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
sin (csc-1 u)
A. 
B. u
C. 
D. 
Rationalize the denominator. Assume all variables represent positive real numbers.
A. 9
+ 10
B. 7
- 6
C. 8
- 10
D. 8
- 6
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. 
D. 