Автор - alaginin

2) Решите уравнение.

Ответ

Автор - QDominus

 sin( frac{pi(2x - 3)}{6} )  =  -  frac{1}{2}

Возможны 2 случая:

1.

 frac{pi(2x - 3)}{6}  =  frac{7pi}{6}  + 2pi n \ pi(2x - 3) = 7pi + 12pi n \ 2x - 3 = 7 + 12n \ 2x = 10 + 12n \ x = 5 + 6n

2.

 frac{pi(2x - 3)}{6}  =  frac{11pi}{6}  + 2pi n \ pi(2x - 3) = 11pi + 12pi n \ 2x - 3 = 11 + 12n \ 2x = 14 + 12n \ x = 7 + 6n

Ответ:

x_{1} = 5 + 6n, nєZ \ x_{2} = 7 + 6n, nєZ

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