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Find the Curvature K of the Curve Given Below r(t)=ti+2t2j+2tk\mathbf { r } ( t ) = t \mathbf { i } + 2 t ^ { 2 } \mathbf { j } + 2 t \mathbf { k }

Question 6

Multiple Choice

Find the curvature K of the curve given below. r(t) =ti+2t2j+2tk\mathbf { r } ( t ) = t \mathbf { i } + 2 t ^ { 2 } \mathbf { j } + 2 t \mathbf { k }


A) 5(5+16t2) 3\frac { 5 } { \sqrt { \left( 5 + 16 t ^ { 2 } \right) ^ { 3 } } }
B) 45(5+4t2) 3/2\frac { 4 \sqrt { 5 } } { \left( 5 + 4 t ^ { 2 } \right) ^ { 3 / 2 } }
C) 2(5+16t2) 3\frac { 2 } { \sqrt { \left( 5 + 16 t ^ { 2 } \right) ^ { 3 } } }
D) 4(5+16t2) 3\frac { 4 } { \sqrt { \left( 5 + 16 t ^ { 2 } \right) ^ { 3 } } }
E) 5(5+16t2) 34\sqrt [ 4 ] { \frac { 5 } { \left( 5 + 16 t ^ { 2 } \right) ^ { 3 } } }

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