E
Editor
Sep 18, 2022
$\coshx$=
Difficulty: Easy
A:
$ln(x+\sqrt{x^{2}-1})$
B:
$(\frac{2}{e^{x}+e^{-x}})$
C:
$\frac{1}{2}(e^{x}+e^{-x})$
D:
$\frac{1}{2}(e^{x}-e^{-x})$
Report issue
ID: 63273db8ca83163ac3a105f3