1. ## Variable separable question.

Can I get some help with this question please?
I can't figure it out and I have an exam tomorrow.

Thanks!

2. ## Re: Variable separable question.

Is...

$\frac{dy}{dt}= 1+t^{2}+y^{2}+t^{2}\ y^{2} = (1+t^{2})\ (1+y^{2}) \implies \frac{dy}{1+y^{2}}= d t\ (1+t^{2})$

Kind regards

$\chi$ $\sigma$