Jawaban:
y = (x²-8)/(x-3)
menurun y'<0
y' < 0
(2x(x-3) - (x² - 8)(1))/(x-3)² < 0
(2x² - 6x - x² + 8)/(x-3)² < 0
(x² - 6x + 8)/(x - 3)² < 0
(x-4)(x-2)/(x-3)(x-3) < 0
x = 4 , x = 2 , x = 3
berdasarkan garis bilangan diperoleh
2 < x < 3 atau 3 < x < 4
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Jawaban:
y = (x²-8)/(x-3)
menurun y'<0
y' < 0
(2x(x-3) - (x² - 8)(1))/(x-3)² < 0
(2x² - 6x - x² + 8)/(x-3)² < 0
(x² - 6x + 8)/(x - 3)² < 0
(x-4)(x-2)/(x-3)(x-3) < 0
x = 4 , x = 2 , x = 3
berdasarkan garis bilangan diperoleh
2 < x < 3 atau 3 < x < 4