Tính I = π 2 ∫ 0 3 cos x d x 4 − sin x15/25Tính \[{\rm{I}} = \mathop \smallint \limits_0^{\frac{{\rm{\pi }}}{{\rm{2}}}} \frac{{3\cos {\rm{xdx}}}}{{4 - \sin {\rm{x}}}}\]\[3({\rm{ln}}4 - {\rm{ln}}3)\]\[({\rm{ln}}4 + {\rm{ln}}3)\]\[({\rm{ln}}12 - {\rm{ln}}9)\]\[ - {\rm{ln}}4 - {\rm{ln}}3\]Giải thíchChọn đáp án A