Pomogite rewit druzya srochno

Question

Pomogite rewit druzya srochno

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Comments

nu kto znaet pomogite

Answer 1

Решение
3*sin(x/4)  ≥ 2
sin(x/4) ≥ 2/3
Применим формулу:
arcsin(2/3) + 2πn <  x/4 < π - arcsin(2/3) + 2πn, n∈Z<br>4*arcsin(2/3) + 8πn <  x < 4π - 4*arcsin(2/3) + 8πn, n∈Z