Question

Evaluate
e^-2to one decimal place.

Answer 1

`\bf ~~~~~~~~~~~~\textit{negative exponents}\\\\ a^(-n) \implies \cfrac{1}{a^n} \qquad \qquad \cfrac{1}{a^n}\implies a^(-n) \qquad \qquad a^n\implies \cfrac{1}{a^(-n)}\\\\ -------------------------------\\\\ e^(-2)\implies \cfrac{1}{e^2}`

plug that in your calculator, yes, your calculator has an [ e ], button for the Euler's constant.