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Calculate the Arc Length of the Indicated Portion of the Curve

Question 138

Multiple Choice

Calculate the arc length of the indicated portion of the curve r(t) .
- r(t) =(4−6t) i+(9+9t) j+(2t−2) k,−10≤t≤1\mathbf { r } ( t ) = ( 4 - 6 t ) \mathbf { i } + ( 9 + 9 t ) \mathbf { j } + ( 2 t - 2 ) \mathbf { k } , - 10 \leq t \leq 1


A) -1089
B) -99
C) 121
D) 1331

Correct Answer:

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