[tex]xy'+3y+4y^3=0[/tex](adsbygoogle = window.adsbygoogle || []).push({});

use substitution of the form [tex]v=1/y^k[/tex] for some positive integer k. Choose a value of k that cancels the y^3 term.

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# Using substiution of the form v=1/y^k to solve 1st order DE

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