# Math Help - Integrating Factor

1. ## 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

2. 1- What is $senx$ ?
2- I think if you read the title of your thread, you will know how to solve it ..