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سلام متوجه نمیشم چطوری به این عبارت رسیده؟
@بچه-های-تجربی-کنکور-1403 @تجربیا @دوازدهم @ریاضیا
Znbs sin4x = 2sin2x cos2x بعد اونور تساوی cos 2x رو فاکتور گرفته
Mo Hr ممنون