| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
5 b$ M, n/ o7 H$ l, Z& A6 P# ]2 U(x - a) (x - b) = x^2 – ax – bx + ab, p& d. c' ]7 A) X2 T8 `% ^
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
7 L& {' W  X' @, d& N(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd& y+ w  n: m8 K% N. B/ i9 N
如此種推，& i6 w) G+ k* n8 _: E
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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$ W: Z9 b9 R, B! L8 q[ 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:
$ V+ J7 V1 A& S* D# \. `3 U(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc& n" l. K% ~2 d

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/ H4 q( R9 g: L. J+ D[ 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:, S. Y5 r" k9 o+ M+ z. \
咁難既=.="  R+ A: _" R5 p

- ]! _7 w) f/ [5 X  I/ x[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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' Z4 n1 e4 a$ @" q# F4 T3 ~. z% dThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 w" V1 y, m! d第一個答中有獎
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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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. M& b: }0 q6 b9 p5 m  a3 f(x-x)= 0 ，所以答案係0，is it?

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1 b" |  q0 l3 ?; @9 p( O# g& O) h& \" T$ n  b) T1 U2 v* I2 o
唔似a.math題
2 b* y( h7 `& w  W" `+ F似IQ題=.=! p! L1 L# q5 }# J

: E2 ^, {  i* [4 l4 W0 \[ 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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! b! F% T: S9 f4 n4 k(x-x)= 0 ，所以答案係0，is it?

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/ B3 Y. y! U5 K& v+ K, r2 rBingo~

waikong

我係學校個學生會單張見過6 R6 D$ l: w& v4 n
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1 c' u$ B# l4 n) M6 c

- ?8 G. t6 a6 ~0 ][ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]