Question

Choose the correct alternative:

It is given that f'(a) exists, then `lim_(x -> "a") (xf("a") - "a"f(x))/(x - "a")` is

Options

• f(a) – af'(a)

• f'(a)

• – f'(a)

• f(a) + af'(a)

Answer 1

f(a) – af'(a)