Предмет: Алгебра, автор: dartsmut

докажите что число T является периодом функции f :f(x)=3cos4x, T=п/2

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Автор ответа: Ruslan254

0

период т находиться по формуле 2*пи/ k под модулем-период число всегда положительное, k- коэффициент перед x => подставляем-2*пи / 4=пи/2

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