# Math Help - Simplification Question

1. ## Simplification Question

Quick question...

I'm having trouble simplifying this expression, it's part of a much bigger one...

$(-sin(e^{-x}) * -e^{-x})$

any help would be awesome!

2. Originally Posted by rust1477
Quick question...

I'm having trouble simplifying this expression, it's part of a much bigger one...

$(-sin(e^{-x}) * -e^{-x})$

any help would be awesome!

$-\sin(e^{-x}) \cdot (-e^{-x}) = e^{-x}\sin(e^{-x})$