# Integrating Factor

#### asd

I have this equation:

$$\displaystyle y'+ytanx=sinx$$

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

Factor replacement and give me:

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

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

Thanks

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#### General

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