# Integrating Factor

• May 14th 2010, 11:33 AM
asd
Integrating Factor
I have this equation:

$y'+ytanx=sinx$

The integrating factor give me $f=e^xcosx$

Factor replacement and give me:

$e^xcosxdy+e^xcosx(ytanx-senx)dx=0$ but the partial derivates give me:

$Q_x=cosxe^x-senxe^x$ and $Q_y=e^xsenx$

Thanks
• May 14th 2010, 11:38 AM
General
1- What is $senx$ ?
2- I think if you read the title of your thread, you will know how to solve it ..