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Pertidaksamaan>> Eksponen
Hy Aida ... :)
x^(2(2x² - x)) < x^(2(2x + 5))
2x² - x < 2x + 5
2x² - 3x - 5 < 0
(2x - 5)(x + 1) < 0
Pembuat nol :
2x - 5 = 0 ---> x = 5/2
x + 1 = 0 ---> x = -1
Uji titik diskitar (-1) dan 5/2, pd garis bilangan
x² = 1
x = 1 atau x = -1
Nilai x yg memenuhi :
-1 ≤ x < 5/2