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Find the Curvature of the Space Curve A) κ=13021+t2\kappa = \frac { 1 } { 30 } \sqrt { \frac { 2 } { 1 + t ^ { 2 } } }

Question 87

Multiple Choice

Find the curvature of the space curve.
- r(t) =409(1+t) 3/2i+409(1t) 3/2j+103tk\mathbf { r } ( \mathrm { t } ) = \frac { 40 } { 9 } ( 1 + t ) ^ { 3 / 2 } \mathbf { i } + \frac { 40 } { 9 } ( 1 - t ) ^ { 3 / 2 } \mathbf { j } + \frac { 10 } { 3 } t \mathbf { k }


A) κ=13021+t2\kappa = \frac { 1 } { 30 } \sqrt { \frac { 2 } { 1 + t ^ { 2 } } }
B) κ=13021t2\kappa = \frac { 1 } { 30 } \sqrt { \frac { 2 } { 1 - t ^ { 2 } } }
C) κ=1321t2\kappa = \frac { 1 } { 3 } \sqrt { \frac { 2 } { 1 - t ^ { 2 } } }
D) κ=1321+t2\kappa = \frac { 1 } { 3 } \sqrt { \frac { 2 } { 1 + t ^ { 2 } } }

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