Separable Differential Equation Won't Separate !

bhaktir

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Aug 10, 2011
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x^2[dy/dx] + xy = e^x

What am I doing wrong?! I can't get the y and the x on different sides!!

PLEASE HELP!
 
Are you sure you have it written correctly?.

As is, \(\displaystyle x^{2}y'+xy=e^{x}\), it is not easily done.

Divide by x^2:

\(\displaystyle y'+\frac{1}{x}y=\frac{e^{x}}{x^{2}}\)

You end up with \(\displaystyle \int\frac{e^{x}}{x}dx\), which is not integrable by elementary means.

If it were changed to \(\displaystyle x^{2}y'+xy=x\), then you'd be in business.
 
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