Report - Phần 1. Nguyên hàmdocs.vietnamdoc.net/data/file/2015/Thang01/15/on-thi-dai...2.sinx =2.cos x+π 3 I = Z cos2x cosx− √ 3sinx dx = cos2x 2. x+π 3 dx x+π 3 =t ⇔ dx =dt. Suy

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