КОНТРОЛЬНЫЕ РАБОТЫ ПО АЛГЕБРЕ И НАЧАЛАМ …
д) sin5x – sin4x cosx = 2sin3x cos2x е) а) 1 – sin4 x – cos4 x = 0 б) 6 sin2x sin6x = 10 cos8x cos(п – x) + 3 cos22x – 3 sin22x ................
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