# Logarithmic differentiation

f(x)=(2x-1)^-2 (x+3)^4 at x=1

f'(x)= -2*2/2x+1 + 4*1/x+3 [(2x-1)^-2)(x+3)^4 and then I plug in 1.

I am having trouble getting an answer when I plug in 1.

f(x)=(2x-1)^-2 (x+3)^4 at x=1

f'(x)= -2*2/2x+1 + 4*1/x+3 [(2x-1)^-2)(x+3)^4 and then I plug in 1.

I am having trouble getting an answer when I plug in 1.