Предмет: Алгебра, автор: filonenkokatia

Помогите пожалуйста!!!!!

Решить уравнение(cos π/3)^(7x-2)≤√8.

Artur43: ^ - это степень или умножение?

Ответы

Автор ответа: nafanya4
0
(cos π/3)^(7x-2)≤√8
(1/2)^7x-2≤√8
(1/2)^7x-2≤2^3/2
2^-(7x-2)≤2^3/2
2^-7x+2≤2^3/2
-7x+2≤3/2
-7x≤3/2-2
-7x≤-1/2
x≥1/14
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