Please help with all these questions :)

Logarithmic Differentiation df (x) 1) Find dx in each case: f(x) =(3x) sin (3x) a) f'(x) = (3x) in(x 3cos (3x) In (3x) + sin (3x) x f (x) = In ex ] b) 3 * f' (x ) = 2+--In(3) x f(x) = 23* @5x log (x4) c) f'(x) =237 5x 4log (x) 3In(2)+5+ xlog(x) In (10) 1 f ( x ) x'(5x-2)5 d) f'(x)=*(5x-2)53 25 3* ex 3" e" x 5x-2 - -In (3)-1 2) Find the slope of the tangent to y= x"at x = e. [2] f ( x) =x2x 3) Find the point(s) on where the tangent has a horizontal tangent line