Find the length of the curve.The curve r = 6
, 0 ? ? ? 
A. 2?
B. 
?
C. 
(? + 2)
D. 6(? + ln(? + 
))
Answer: B
Mathematics
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Find the length of the curve with the given vector equation.r(t) = (8 - 2t)i + (4 + 6t)j + (9t - 3)k, -7 ? t ? -1
A. -88 B. -968 C. 66 D. 726
Mathematics
Evaluate the integral.
A. 2 + 
B. 2 - 
C. 2
D. 1
Mathematics
Give the interval where the function increases or decreases, as requested.f(x) = -3x2 + 2decreases
A. [2/3, ?) B. (0, ?) C. (0, -?) D. (-?, 2/3)
Mathematics
Solve.5
= 
A. x = - 
B. x = - 
C. x = 7
D. no solution
Mathematics