Differential Equations Question 80

Question: The solution of $ ydx-xdy+3x^{2}y^{2}{e^{x^{3}}}dx=0 $ is

Options:

A) $ \frac{x}{y}+{e^{x^{3}}}=c $

B) $ \frac{x}{y}-{e^{x^{3}}}=0 $

C) $ \frac{-x}{y}+{e^{x^{3}}}=0 $

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

$ ydx-xdy+3x^{2}y^{2}{e^{x^{3}}}dx=0 $

$ \frac{ydx-xdy}{y^{2}}+3x^{2}{e^{x^{3}}}dx=0 $

Therefore $ d( \frac{x}{y} )+d{e^{x^{3}}}=0 $

On integrating, we get $ \frac{x}{y}+{e^{x^{3}}}=c $