Hello,

I need to solve the differential equation $\displaystyle y'-x^2-e^y=0$ using series, with initial conditions x=0 and y=0.

My problem is $\displaystyle e^y$. I know what I could have done with $\displaystyle e^x$ (replace $\displaystyle e^x$, $\displaystyle y$ and $\displaystyle y'$ par their series in the differential equation) ... but what can I do with $\displaystyle e^y$ ??

Thanks to everybody,