# How do you differentiate  y= e^(1-x) ?

Feb 22, 2016

#### Answer:

I found: y´=-e^(1-x)

#### Explanation:

Here we can use the Chain Rule deriving the exponential first without considering the exponent (red) times the derivative of the exponent (blue):

y´=color(red)(e^(1-x))*color(blue)((-1))=-e^(1-x)