# What is the derivative of #e^(-x)#?

##### 1 Answer

Jan 24, 2016

# - e^-x #

#### Explanation:

Using 'chain rule':

then

#d/dx (e^-x ) = e^-x .d/dx (-x ) =e^-x .(-1) = - e^-x #

Jan 24, 2016

# - e^-x #

Using 'chain rule':

then

#d/dx (e^-x ) = e^-x .d/dx (-x ) =e^-x .(-1) = - e^-x #

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