| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a7 [3 L1 H, a+ u$ N% Q* l9 C+ u
(x - a) (x - b) = x^2 – ax – bx + ab
+ ^* \5 a) a; a9 W4 |# Q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc) K- z+ b$ C0 H; s
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
: Y3 q9 K7 O9 X- K4 O& o# l如此種推，
. j1 w2 _1 s/ b, ^  g(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???  V7 P, R3 b$ I& d, E8 U) k

# h: d% B8 _6 |6 `4 a[ 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# t4 O* b& h5 J- ]( V6 M, u

Originally posted by Triangel at 2007-4-18 01:26 PM:
; z) R( O, `; A& Q/ M6 D(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc: n2 v! Z- _" z2 N; X

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[ 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:
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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+ f5 I! d  z5 j# T. z3 c7 sThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
/ t# F8 }, d2 H4 W* u第一個答中有獎
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# i2 N6 D8 K% z6 ]# m7 n  n(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:- P% _, @) I0 O/ t

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) F# C! D  F  i(x-x)= 0 ，所以答案係0，is it?

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' I1 `1 W3 _4 }! T- ?唔似a.math題+ Z. R7 C% H" Y1 [7 s- D+ ^+ H
似IQ題=.=
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. Q5 Z3 B; T* O7 R[ 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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/ g9 L  n2 ]! C$ SBingo~

waikong

我係學校個學生會單張見過5 I+ a* ]7 L/ H9 j; ]
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.........' G4 a  _8 p# t4 q& v1 X
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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 ]