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The following DEs are not solvable as written. Perform the given variable change to turn them...

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Basic Math

The following DEs are not solvable as written. Perform the givenvariable change to turn them into something that you are equippedto solve (e.g. either linear, separable or exact) and then find thegeneral solution. Your answer should be in the formy(x)=...y(x)=...

a) dydx=x2+y2?2xydydx=x2+y2?2xy using u=y?xu=y?x

b) xdydx?y=x2?y2???????x>0xdydx?y=x2?y2x>0 usingu=yxu=yx

c) dydx=y(xy3?1)dydx=y(xy3?1) using u=1y3

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