Differentiation Question 63

Question: If $ y=x+\frac{1}{x} $ , then

Options:

A) $ x^{2}\frac{dy}{dx}+xy=0 $

B) $ x^{2}\frac{dy}{dx}+xy+2=0 $

C) $ x^{2}\frac{dy}{dx}-xy+2=0 $

D) None of these

Show Answer

Answer:

Correct Answer: C

Solution:

$ y=x+\frac{1}{x} $

Therefore $ \frac{dy}{dx}=1-\frac{1}{x^{2}} $

Therefore, $ x^{2}.\frac{dy}{dx( 1-\frac{1}{{}} )}-xy+2=x^{2} $