Решите уравнение -2cosx=√2sin(2x)

Решите уравнение -2cosx=√2sin(2x)
- Предмет:
  Алгебра
- Автор:
  francisco478
- 5 лет назад

Ответы 1

-2cosx=√2sin(2x)-2cosx=√2*2sinx*cosx√2*2sinx*cosx+2cosx=0(√2*sinx+1)2cosx=0(√2*sinx+1) = 0 или 2cosx=0√2*sinx=-1 cosx=0sinx=-1/√2 х = П/2+Пк, к - целое числох = -П/4+2Пк, где к - целое числох = -5П/4+2Пк, где к - целое числоОтвет:х = П/2+Пк, к - целое числох = -П/4+2Пк, где к - целое числох = -5П/4+2Пк, где к - целое число
- Автор:
  franciscowtej
- 5 лет назад
- 0
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Решите уравнение -2cosx=√2sin(2x)

Ответы 1

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