Find-the-domain-of-the-function-f-x-1-cos-2-x-

Question Number 38734 by Rio Mike last updated on 28/Jun/18

$${Find}\:{the}\:{domain}\:{of}\:{the}\:{function} \\ $$$${f}\:\left({x}\right)\:=\:\mathrm{1}\:−\:{cos}^{\mathrm{2}} \:{x} \\ $$

Commented by MrW3 last updated on 29/Jun/18

$${x}\in\left(−\infty,+\infty\right) \\ $$$${y}\in\left[\mathrm{0},\mathrm{1}\right] \\ $$