1.

If y2 = 4ax then \(\rm \frac{dy}{dx} = \)1. 4a2. \(\rm \frac{4a}{y}\)3. \(\rm \frac{2a}{y}\)4. 2a

Answer» Correct Answer - Option 3 : \(\rm \frac{2a}{y}\)

Concept:

\(\rm \frac{dx^n}{dx}=nx^{n-1}\)

 

Calculation:

Given: y2 = 4ax

Differentiating with respect to x, we get

\(\rm \Rightarrow {2y}\frac{dy}{dx} = 4a\)

\(\rm \Rightarrow \frac{dy}{dx} = \frac{4a}{{2y}} \)

\(\rm \therefore \frac{dy}{dx} = \frac{2a}{y} \)



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