Question

why only use differentiate with respect to x, y kyu ni hota ya koi other Plz clear my doubt I will give brain ​

Answer 1

it depends on the problem.

Generally, you can use any variable to differentiate with.

It is not restricted to x alone.

Ex:

If I have an equation

${x}^{2} + {y}^{2} = 36$

If I differentiate with respect to x, I will get

$2x + 2y \frac{dy}{dx} = 0$

If I choose to differentiate wrt y throughout,

I will get

$2x \frac{dx}{dy} + 2y = 0$

So, in the end it does not matter if you choose x or y.

Since x is the most commonly used variable, most of the time it is differentiated wrt x.

Hope it helps!!

Answer 2

You can use anything. Cheers mate