Sifat-Sifat pertidaksamaan
17.28
Diposting oleh Melany Christy
Antara dua bilangan a dan b terdapat hubungan :
a > b ; a = b atau a <> |
a = b ® a - b = 0
a < face="Symbol">®
c-a-b>0
a <> ® | { | a + c <> |
a - c <> |
a <> | } | ® | { | ac <> |
c > 0 | a/c <> |
Tanda tetap
Dikali/dibagi dengan bilangan negatif yang sama
a <> | } | ® | { | ad > bd | TANDA BERUBAH |
d <> | a/d > b/d |
Pangkat Genap
a > 0 ; b > 0 | } | ® | a² <>TANDA TETAP |
a <> |
a <> | } | ® | a² > b² TANDA BERUBAH |
a <> |
Pangkat Ganjil
a < face="Symbol">® | { | a³ <> | ® TANDA TETAP |
a5 <>5 | |||
a7 <>7 |
Kebalikan
a > 0 ; b > 0 | } | ® | 1/a > 1/b TANDA BERUBAH |
a <> |
a <> | } | ® | 1/a > 1/b TANDA BERUBAH |
a <> |
This entry was posted on October 4, 2009 at 12:14 pm, and is filed under
matematika,
Matematika kelas 1,
pertidaksamaan,
sma kelas 1
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