Question

Find derivative w.r.t (x) f(x)=(a-b)(a+b)?

Answer 1

Assuming that `a` and `b` are constants, `f'(x) = 0`

Explanation:

The derivative of a constant function is `0`.

If `a` and `b` may not be constant

The `f(x) = a^2-b^2` and, using the chain rule

`f'(x) = 2a (da)/dx - 2b (db)/dx`