| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎9 ]8 h' q- K: a/ ^" a

5 C# M* a" u" h(x - a) = x - a0 z; e# R% |1 d
(x - a) (x - b) = x^2 – ax – bx + ab
8 o! O1 ~9 X/ Q' n' Y; g(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc9 |6 }5 B; D' e; I$ k3 Q' M
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd" a9 ^. {1 r% T2 }
如此種推，: @+ d. m3 w  ]4 h! ~& m% F
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???5 U& U) o, Q9 S6 U. k. x/ x

: O6 g* S" X/ W[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:0 N! s' G  Z/ q4 A5 ]2 M
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc, t# a0 o/ o3 f0 A& n2 ~# k' D( N
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' f9 j6 y! G) p0 N# f6 E/ V6 f1 l[ 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:
. D9 Q: K7 f% h* N. u* R& Q' m咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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+ d8 Z% O" [( q! i" GThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:& h! Y% ]! V0 s( B
第一個答中有獎5 y7 g& a; \7 H. J$ t9 i3 X" \( a

8 X$ F# Q- g& a& v/ N5 [(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:; `2 s, j. i, U
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* f  y, L; \6 g  e/ _& X- E* S7 b
(x-x)= 0 ，所以答案係0，is it?

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# R7 q, N- t7 K7 x8 I- q. m7 }2 \' G- Q  ~
唔似a.math題
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; E# i9 f* y" d7 n5 N[ 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:
' v+ a3 t0 w* L2 {/ Z
. B6 E' ?8 m$ k- b( N5 A) v% G
$ _- z; H2 [' ^(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' Q4 R! \% ]3 Y, B% E0 A$ O+ Q
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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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 ]