Integrating factor of the differential equation  x y' − y = Sin x is :

log x log(log x) x 1/x

1/x

xy' - y = Sin x  y' - \(\frac{y}{x}\) = \(\frac{Sin x}{x}\) Integrating factor : e\(\int_{}^{}d\)x (-1/x) = e -log x = 1/x