27) integral (√x-3)² = x - 6√x + 9 = x - 6x½ + 9 = x¹+¹ - (6x)½+1 + 9x = 1/2x² - 3x√x +9x+c
28) integral (x+2)(x-4) =x²-2x-8=1/3x³ -x²-8x + C (C)
29) f'(x) = 3x²-6x+2, f(x) = x³-3x²+2x+c, f(-1)= -2
(-1)³-3(-1)²+2(-1)+c= -2
-1-3-2+c = -2
-6+c= -2, c = 4
jadi , f(x) = x³-3x²+2x+4 (B)
30) dy/dx = 4x-5, x = 2x²-5x+c, maaf no terakhir belum bisa
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27) integral (√x-3)² = x - 6√x + 9 = x - 6x½ + 9 = x¹+¹ - (6x)½+1 + 9x = 1/2x² - 3x√x +9x+c
28) integral (x+2)(x-4) =x²-2x-8=1/3x³ -x²-8x + C (C)
29) f'(x) = 3x²-6x+2, f(x) = x³-3x²+2x+c, f(-1)= -2
(-1)³-3(-1)²+2(-1)+c= -2
-1-3-2+c = -2
-6+c= -2, c = 4
jadi , f(x) = x³-3x²+2x+4 (B)
30) dy/dx = 4x-5, x = 2x²-5x+c, maaf no terakhir belum bisa