Question

please solve this question​

Answer 1

Answer: ($x^{4}$+$y^{4}$) dx= x$y^{3}$dy

$\frac{dy}{dx}$= $\frac{x^{4} +y^{4} }{xy^{3} }$

= $\frac{x^{4} }{xy^{3} }$+$\frac{y^{4} }{xy^{3} }$

=$\frac{x^{3} }{y^{3} }$+$\frac{y}{x}$

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