Pertidaksamaan Eksponen
16.52
Diposting oleh Melany Christy
Bilangan Pokok a > 0 ¹ 1
Tanda Pertidaksamaan tetap/berubah tergantung nilai bilangan pokoknya | |
a > 1 | 0 <> |
af(x) > ag(x) ® f(x) > g(x) (tanda tetap) | af(x) > ag(x) ® f(x) < g(x) (tanda berubah) |
Catatan: Untuk memudahkan mengingat, bilangan pokok 0 < a =" 1.
Misal : 1/8 = (1/2)3 = 2-3
Contoh:
(1/2)2x-5 < (1/2)2(1/2x+1)
Tanda berubah (0 <>
2x - 5 > x +2
x > 7
(3x)² - 4.31.3x + 27 > 0
misal : 3x = p
p² -12p + 27 > 0
(p - 9)(p - 3) > 0
| p <> 9 3x <> 3² x <> 2 |
This entry was posted on October 4, 2009 at 12:14 pm, and is filed under
Eksponen,
matematika,
matematika kelas 2,
sma kelas 2
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