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@Асcоль
August 2022
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Решите уравнение 2cos - cos^2 x = 0
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Dимасuk
Verified answer
2cosx - cos²x = 0
cosx(2 - cosx) = 0
cosx = 0
x = π/2 + πn, n ∈ Z
2 - cosx = 0
cosx = 2 - нет корней
Ответ: x = π/2 + πn, n ∈ Z.
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Асcоль
Спасибо большое!
frost54321
Http://math-rus.ru/blog/primer_10_iz_zadanija_13_s1_profilnyj_uroven/2015-10-23-36 Тут решение
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Answers & Comments
Verified answer
2cosx - cos²x = 0cosx(2 - cosx) = 0
cosx = 0
x = π/2 + πn, n ∈ Z
2 - cosx = 0
cosx = 2 - нет корней
Ответ: x = π/2 + πn, n ∈ Z.