Differential Equations Question 269

Question: What is the degree of the differential equation $ y=x\frac{dy}{dx}+{{( \frac{dy}{dx} )}^{-1}} $ -

Options:

A) 1

B) 2

C) -1

D) Degree does not exist.

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Given differential equation is $ y=x\frac{dy}{dx}+{{( \frac{dy}{dx} )}^{-1}} $ Multiply by $ \frac{dy}{dx};y\frac{dy}{dx}=x{{( \frac{dy}{dx} )}^{2}}+1 $ Since power of highest order derivative is 2.
$ \therefore $ degree = 2