# Math Help - Derivatives

1. ## Derivatives

f(x)=(18^x)+(10.5e^x)+(x^20)+(58^21)
find f'(x)

I understand how to do the last two parts, just not the first two...thanks!

2. Originally Posted by ryandman89
f(x)=(18^x)+(10.5e^x)+(x^20)+(58^21)
find f'(x)
You know that $(e^x)'=e^x$ and $(ae^x)'=ae^x,$ where $a$ is a constant.

On the other hand, $18^x=e^{x\ln18},$ now take its derivative.