Предмет: Алгебра, автор: lanaantishkina

2sin4x-1 больше или ровно 0

Ответы

Автор ответа: Аноним

2sin4x-1 ≥ 0 2sin4x ≥ 1 sin4x ≥ 1/2 п/6+2пк ≤4x≤5п/6+2пк

п/24+ пк/2 ≤ x ≤ 5п/24+пк/2

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