If 'f' is derivable at x =a, find `underset(xrarra)lim(xf(a)-af(x))/(x-a)`

If 'f' is differentiable at x = a, find (underset(xrarra)lim(x^2f(a)-a^2f(x))/(x-a))

underset(xrarra)lim (x^n-a^n)/(x-a) is equal to:

If f is diffenrentiable at x = 1 , then underset (xto1) ("limit") (xf(1)-f(x))/(x-1) is equal to :

Evaluate: underset(xrarra)lim ((x+2)^(5/3)-(a+2)^(5/3))/(x-a) .

Let f(x) be a differentiable function and f'(4) = 5, then: underset(xrarr2)lim(f(4)-f(x^2))/(x-2) equals:

Evaluate: underset(xrarra)lim [(x+2)^(3/2)-(a+2)^(3/2)]/(x-a) .