Решить уравнение: sin3x + sinx = 0

Решить уравнение: sin3x + sinx = 0
- Предмет:
  Алгебра
- Автор:
  adalbertogarcia
- 6 лет назад

Ответы 6

а аргумент 2х?
- Автор:
  mason601
- 6 лет назад
- 0
пропустила
- Автор:
  cox
- 6 лет назад
- 0
сейчас исправлю
- Автор:
  pookiem4js
- 6 лет назад
- 0
ааа, нет, поодожди, я синус двойного угла расписа просто..
- Автор:
  allie11
- 6 лет назад
- 0
расписала*
- Автор:
  morris
- 6 лет назад
- 0
$sin3x+sinx=0\\2sin \frac{3x+x}{2}*cos \frac{3x-x}{2}=0\\2sin2x*cosx=0\\2sinx*cosx*cosx=0\\2sinx*cos^2x=0\\2sinx=0\\sinx=0\\x= \pi n,...\\cos^2x=0\\cosx=0\\x= \frac{ \pi }{2}+ \pi n,...$ Там, где запятая и многоточие, там, n∈z
- Автор:
  reesechxx
- 6 лет назад
- 0
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Решить уравнение: sin3x + sinx = 0

Ответы 6

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