Найдите область определения функции:
[tex]y= \sqrt{1-2cos^2( \frac{3 \pi }{2}-x) } [/tex]

Варианты ответов:
A) [tex][2 \pi n; \pi +2 \pi n][/tex] B) [tex][- \frac{ \pi }{4}+ \pi n; \frac{ \pi }{4}+ \pi n ][/tex] C)[tex][ \frac{ \pi }{4}+ \pi n; \frac{ 3\pi }{4}+ \pi n ][/tex] D) [tex][ \frac{ \pi }{2}+ 2\pi n; \frac{ 3\pi }{2}+ 2\pi n ][/tex]
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