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Простейшие тригонометрические уравнения и отбор корней

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Theory :: Example task

Решите уравнение \(\displaystyle \sin(3x)=\frac{1}{2}{\small .}\)

\(\displaystyle x_1=\)
\frac{\pi}{18}
\(\displaystyle +\)
\frac{2}{3}
 \(\displaystyle \pi n\ , \, n\in \mathbb{Z}\)

Первое слагаемое из интервала \(\displaystyle \left(0;\,\frac{\pi}{6}\right){\small .}\)


\(\displaystyle x_2=\)
\frac{5\pi}{18}
\(\displaystyle +\)
\frac{2}{3}
 \(\displaystyle \pi n\ , \, n\in \mathbb{Z}\)

Первое слагаемое из  интервала \(\displaystyle \left(\frac{\pi}{6};\,\frac{\pi}{3}\right){\small .}\)

Theory :: Solution
OK, go next  
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