Calculate the arc length of the indicated portion of the curve r(t).r(t) = (10 + 2t2)i + (2t2 - 8)j + (5 - t2)k, -1 ? t ? 3
A. 24
B. 90
C. 72
D. 30
Answer: A
Mathematics
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Simplify.
A. 40 B. -9 C. not a real number D. 9
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Graph the function.y = 3 csc x
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.9y = -36
A. -4 B. 4 C. 45 D. -45
Mathematics
The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = 
B. f-1(x) = x2 + 3, x ? 0
C. f-1(x) = x2 - 3, x ? 0
D. f-1(x) = (x - 3)2
Mathematics