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cara simpel nya..
=∫ 3(2x-3). (x² - 3x - 5)⁻¹/² dx
= { 3(2x-3)/ (2x-3 } (2)(x² - 3x -5)¹/² + c
= 3(2) √ (x² -3x - 5) + c
= 6 √(x² - 3x - 5) + c
cara panjangnya
u = x² -3x - 5
du = 2x - 3 dx
6x-9 dx = 3 du
=∫ 3 /√u du = ∫ 3 u⁻¹/² du
= 3 (2) u¹/² +c
= 6 √ u + c
= 6 √(x² - 3x - 5) + c