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Verified answer
Jawab∫ 15 csc² (3x+2) dx =
u = 3x + 2
du = 3 dx
15 dx = 5 du
∫ 15 csc² (3x+2) dx = ∫ 5 csc² u du
= 5 (- cot u) + c
= - 5 cot (3x+2) + c