Hello, not sure if it's a typo in the book but I can't work this out:(adsbygoogle = window.adsbygoogle || []).push({});

y'' + y(x^2 + e^x) = 0;

It's second order but both dependent and independent variables are present, and i am stuck.

You don't have to solve it for me entirely, a hint would be great.

Thanks in advance.

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Second order DE

**Physics Forums | Science Articles, Homework Help, Discussion**