Let $y = 2 x ^ { 2 }$ Then the Curvature K at (1, 2) Is

Multiple Choice

Let $y = 2 x ^ { 2 }$ . Then the curvature K at (1, 2) is

A) $\frac { \sqrt { 2 } } { 13 }$
B) $\frac { \sqrt { 2 } } { 11 }$
C) $\frac { 4 } { 5 }$
D) $\frac { 4 } { 17 \sqrt { 17 } }$
E) $\frac{4}{\sqrt{17}}$