Question is: Evaluate the following limits lim x--> 0 4^x - e^2x / 2x So i take derivatives but thats where im confused.... Whats the derivate of 4^x... x4^-x??? and is the derivative of -e^2x -2e^x??? So then that leaves me with 4x^-x -2e^x /2which is 0... so do i do derivatives again??? It seems like the x's wont go away????