Question

Derivada de
$y=100e^-^x$

Answer 1

Derivada de e^(-×) = e^(-×)*(-x)' => -e^(-×). Então será: -100e^(-×)

Answer 2

$\sf \displaystyle y=100e^{-x}\\\\\\\frac{d}{dx}\left(100e^{-x}\right)\\\\\\=100\frac{d}{dx}\left(e^{-x}\right)\\\\\\=e^{-x}\frac{d}{dx}\left(-x\right)\\\\\\=100e^{-x}\left(-1\right)\\\\\\\to \boxed{\sf =-100e^{-x}}$