2cost-5 найдите наименьшее значение выражения

2cost-5 найдите наименьшее значение выражения
- Предмет:
  Алгебра
- Автор:
  mr kittyrmfz
- 6 лет назад

Ответы 3

cost>=-1 при всех t, поэтому 2cost>=-2, 2cost-5>=-7.min достигается, например, при t=pi вот так
- Автор:
  pongo30oq
- 6 лет назад
- 0
правильно
- Автор:
  luisguerrero
- 6 лет назад
- 0
Так как , то .

А значит, , то есть

Таким образом, наименьшее значение равно -7.
- Автор:
  gregorio
- 6 лет назад
- 0
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2cost-5 найдите наименьшее значение выражения

Ответы 3

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