Let f(x) = -4In(4x) f'(x ) = f' (3) = Let f(x) = (Inz)$ f'(x) f'(e?) =Let f(x) = In(26) f'(x) = f'(e3) = OIf f() = 3 cos(2 In(=)) find f'(x). Find f' (1).If f(x) = e" + In(7 When f' " )Suppose that f(@) = 14ex - ex . Find f'(3) f' (3 ) =Suppose that f(z) = 12 +3 Find f' (2). f' ( 2 ) =Let f(x) =4x + 7 - 15e. Then the equation of the tangent line to the graph of f(x) at the point (0, -8) is given by y = mr + b for m b