Find the one answer that truly corresponds to - вопрос №921813 от ЛОЛКЕК12346 31.01.2020 07:09

Question

Другие предметы: Find the one answer that truly corresponds to the original version of the novel: Pygmalion has been both filmed (1938), winning an Academy Award for Shaw for his screenplay

ЛОЛКЕК12346 · Answer

cos4x=cos^2(2x)-sin^2(2x) cos^2(2x)+sin^(2x)-cos^(2x)+sin^2(2x)=2sin^2(2x) 2sin^2(2x)-sin2x=0 sin2x=0 x=Пn/2 sin2x=1/2 x=П/12+Пn x=5П/12+Пn...