| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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4 Y. W! O# \' k8 P7 r" f(x - a) = x - a
- I# p' C/ `8 w' o! }, c& R(x - a) (x - b) = x^2 – ax – bx + ab
& u; {6 c4 Z# p0 I(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) d+ c. b+ L3 t. ?5 l: }  i! @. V9 ~(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ g: @3 i. b% `7 q% k* w2 C
如此種推，
" U5 N% I! ^( |2 Q; I$ O4 T(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???6 w7 t" v0 c+ J+ B6 u. \

0 T& ?$ P; s" W% ]4 P[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

大大

點解你個問題好似有d問題& ?/ U# X1 \) ^: k- T$ y

Originally posted by Triangel at 2007-4-18 01:26 PM:
) q0 h3 R/ P! ^7 I(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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0 C& f8 a0 X* W0 E( ^! O  S2 Y[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:! G1 w8 M2 A0 u/ c. U/ q
咁難既=.="# \: j# l( r2 w9 b5 D$ n5 K

" Y5 U; E: Z2 O1 q" X[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:3 X+ }# \1 F: g" r
第一個答中有獎) p0 N2 B9 c! X# l7 H& k& g) _
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(x - ...

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(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
0 Q; i( K2 K! @! h; B; ?似IQ題=.=
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9 [0 s6 H0 p& l, P[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:
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(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過
1 F0 G3 j& }. o) o諗左一陣先諗到

playbr2

我吾識答啊http://i72.photobucket.com/albums/i162/xcopy/Monkey/049.gif~~~ http://i72.photobucket.com/albums/i162/xcopy/Monkey/022.gif

karen0123

(哭)~~~~~其實我都知係0.........
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0 z/ m2 ^2 v5 n( h這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]