截拳道小子 發表於 2004-9-18 17:49:26

係喎... :o

愈黎愈亂添 :(
:(

27-->(-1)(-3)^3
but 多左個 -1:o

忍者小靈叮 發表於 2004-9-18 19:25:56

:(

27-->(-1)(-3)^3
but 多左個 -1:o
即係點... :(

kalok914 發表於 2004-9-19 00:19:55

27 * (-1/3)^(2n-1)
=3^3 * (-3)^(1-2n)
=-(-3)^3 * (-3)^(1-2n)
=-(-3)^(4-2n)
=-(3)^(4-2n) (because 4-2n is a even number)
唔知有冇計錯

截拳道小子 發表於 2004-9-19 15:20:49

27 * (-1/3)^(2n-1)
=3^3 * (-3)^(1-2n)
=-(-3)^3 * (-3)^(1-2n)
=-(-3)^(4-2n)
=-(3)^(4-2n) (because 4-2n is a even number)
唔知有冇計錯
:o

Raul 發表於 2004-9-19 15:30:12

:o
即係點 :o

截拳道小子 發表於 2004-9-19 15:35:27

即係點 :o
好勁 :o
我唔記得左可以變番正 :(
頁: 1 [2]
查看完整版本: maths.....