The integrating factor of the differential equation $(y \log_ey)\frac{dy}{dx}+x=2\log_ey$ is:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $\log_ey$
$(y \log_ey)\frac{dy}{dx}+x=2\log_ey$
$⇒\frac{dy}{dx}+\frac{1}{y\log_ey}x=\frac{2}{y}$
$⇒\frac{dy}{dx}=\frac{2\log_ey-x}{y\log_ey}$
$⇒\frac{dx}{dy}=\frac{y\log_ey}{2\log_ey-x}$
$⇒\frac{dx}{dy}+\frac{1}{y\log_ey}x=\frac{2}{y}$
$e^{\int\frac{1}{y\log_ey}dy}=e^{\log_e(\log_ey)}+C$
$I.F.=e^{\log_e(\log_ey)}$
$=\log_ey$