Question

ctg (x/4)-1=0 Дайте ответ срочно!

Answer 1

$ctg( frac{x}{4} ) - 1 = 0 \ ctg( frac{x}{4} ) = 1 \ frac{x}{4} = frac{pi}{4} + pi n \ x = pi + 4pi n, : n in Z$