Question

find Derivative of 2^(-x) ?

Answer 1

do you know what the derivative of \(b^x\) for arbitrary base \(b\) ?

Answer 2

no

Answer 3

\[\frac{d}{dx}[b^x]=b^x\ln(b)\]

Answer 4

so
\[\frac{d}{dx}2^{-x}=-2^{-x}\ln(2)\] by the chain rule

Answer 5

there should be e right ?