## Solving a non-linear non-seperable differential equation

I'm having trouble solving this differential equation:

(2x^2)yy' = −1

I'm just really not sure how to go about solving this.

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 Recognitions: Homework Help Why isn't it separable? $$2x^2 y \frac{dy}{dx} = -1 \Rightarrow 2y dy = -\frac{dx}{x^2}$$
 Ah yes, that's actually quite easy, I'm just being dense. Thanks for the help. SuperNomad