Задача 46035 ...

marinichvika15

2020-04-05 18:33:38

sinx/3 ≤ - 1/sqrt(2)

sova

2020-04-05 21:31:40

★

-(3π/4)+2π*n ≤( x/3) ≤ -(π/4)+2π*n, n ∈ Z

Умножаем на 3:

[b]-(9π/4)+6π*n ≤ x ≤ -(3π/4)+6π*n, n ∈ Z[/b]