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ydx=(e3x+1)dy
D.E.
ydx=(e3x+1)dy
Since the equation has separable variables,
ydx=(e3x+1)dydxe3x+1−dyy=0∫e3xdxe6x+e3x−∫dyy=∫013(3x−ln(e3x+1))−lny=C3x−ln(e3x+1)−3lny=C
Rearranging, the answer is e3x=Cy3(e3x+1)