## Question

###### The equation (zy+y? +z?) dr z? dy = 0 is & homogeneous equation. Verify that it is and then use substitution to golvc it_ (Hint: y(z) = ru(z))_

The equation (zy+y? +z?) dr z? dy = 0 is & homogeneous equation. Verify that it is and then use substitution to golvc it_ (Hint: y(z) = ru(z))_

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