The general solution of the differential equation $\frac{dy}{dx} + \frac{y}{x} = 3x$ is

Question

$y = x + \frac{c}{x}$

$y = x^2 + \frac{c}{x}$

$y = x - \frac{c}{x}$

$y = x^2 - \frac{c}{x}$

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