Answer
$L = \int ^{1}_{-1} \sqrt{1+4y^2e^{2y^{2}}}dy$
Work Step by Step
$y^{2} = \ln x$ then $x = e^{y^{2}}$ and $dx/dy = 2ye^{y^{2}}$ and $1+(dx/dy)^2 = 1+4y^2e^{2y^{2}}$
$L = \int ^{1}_{-1} \sqrt{1+4y^2e^{2y^{2}}}dy$
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