help me !!!!!!!!!!! minh can gap. ai giai dc pt luong giac nay minh cho nam sao luon do?
a) sinx + cosx +cos2x = 3
b) 2sinx + cos3x = can12
a) sinx + cosx +cos2x = 3
b) 2sinx + cos3x = can12
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potay
a) vt < 3 mọi x => vn
b) vt < 3 < √12 mọi x => vn
may bai nay ma ko giai dc de nghi ban nen nghi hoc di chan bo nha