Question

if functions f and g are differentiable then f-g is also differentiable??

Answer 1

If the limit exists for all x0 ∈ (a, b) then f is said to be differentiable in the interval. It is differentiable at ... fg is differentiable at x0 and (fg) (x0) = f (x0)g(x0) + f(x0)g (x0).