| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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4 S, l2 ]& X0 D(x - a) = x - a
! i2 w: P9 R, y; k# D(x - a) (x - b) = x^2 – ax – bx + ab8 _  d3 D0 F" p( B& @' B2 e
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
+ r* z- _& W% w, }(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd! F( @6 X1 E: e, [, R% m$ [3 n/ k7 ]
如此種推，
" B! W0 }0 ]4 a# [(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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4 w5 g7 ^2 }& ~; y[ 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, V( U' i0 c0 ^. B" Y" V0 v# X

Originally posted by Triangel at 2007-4-18 01:26 PM:' k8 @: h. {4 e8 }* Y3 |4 q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc: z" ~4 Q+ f! F
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( o, ?( @; C! h+ X& x[ 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:. Y" S# h% o  f
咁難既=.="
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3 o# g/ x8 F0 b4 f% y[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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: v7 G6 X& \. O" d& p6 |Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
& ~4 p+ L% J, @! U' v6 u* C7 m第一個答中有獎
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1 [* ]$ E4 ^  F(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:; w8 }8 Q& A0 e% |7 M

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7 q4 S% U  d6 R, F. J(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題# p  k4 U5 S7 }+ @3 s
似IQ題=.=
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) V; V# _% U" ^% {, D  n  L[ 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" t/ M& U# W  B5 m% E

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(x-x)= 0 ，所以答案係0，is it?

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4 `1 _' c5 C2 v: r9 z& V7 r6 VBingo~

waikong

我係學校個學生會單張見過4 R3 h/ M* ?( X) ]  D. ?
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* w0 c. o. k- B# C4 A
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]