Find the value for the function.Find f(x + 1) when f(x) =
.
A.
B.
C.
D.
Answer: A
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Evaluate the integral.dx
A. cot4 x sec x + C
B. - cot2 x -
ln
+ C
C. cot4 x + C
D. cot2 x + ln
+ C
Rationalize the denominator.
A.
B. 9
C. 9
D.
Find the domain of the logarithmic function.f(x) = log(x - 4)
A. (4, ?) B. (-?, 0) ? (0, ?) C. (-4, ?) D. (-?, 4) ? (4, ?)
Solve the problem.It is estimated that the total value of a stamp collection is given by the formula where t is the number of years from now. If the inflation rate is running continuously at 4% per year so that the (discounted) present value of an item that will be worth $v in t years' time is given by
Sketch the graph of the discounted value as a function of time at which the stamp collection is sold. The graph has an absolute maximum at (0, 41,200), and a local maximum at one other point. What is the value of t at the local maximum? What is the discounted
value of the collection at that time?
A. ; at which time the discounted value is
.
B. ; at which time the discounted value is
.
C. ; at which time the discounted value is
.
D. ; at which time the discounted value is
.