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Find the Curvature Of y=x7y = x ^ { 7 }

Question 12

Multiple Choice

Find the curvature of y=x7y = x ^ { 7 } .


A) x5(1+49x12) 1/2\frac { | x | ^ { 5 } } { \left( 1 + 49 x ^ { 12 } \right) ^ { 1 / 2 } }
B) 42x5(1+49x12) 3/2\frac { 42 | x | ^ { 5 } } { \left( 1 + 49 x ^ { 12 } \right) ^ { 3 / 2 } }
C) 42x5(149x12) 3/2\frac { 42 | x | ^ { 5 } } { \left( 1 - 49 x ^ { 12 } \right) ^ { 3 / 2 } }
D) x5(1+x12) 3/2\frac { | x | ^ { 5 } } { \left( 1 + x ^ { 12 } \right) ^ { 3 / 2 } }
E) 42x5(1+49x12) 1/2\frac { 42 | x | ^ { 5 } } { \left( 1 + 49 x ^ { 12 } \right) ^ { 1 / 2 } }

Correct Answer:

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