| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎% q0 m7 \# O2 R$ h+ e2 I4 Q$ I
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(x - a) = x - a2 y# \, S2 n0 D$ j5 p: t
(x - a) (x - b) = x^2 – ax – bx + ab
  F- W! o% a, f1 J' Z+ u( U/ a(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 L+ [6 G& d1 D& K6 J4 z(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
/ |6 X/ ?& ^% @4 s如此種推，* E3 Z6 D. z8 R2 B8 r4 S! g+ S
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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. J* H% j7 d# O( F% t2 D[ 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:
' I! T) \, B( ~6 m3 G, \2 l(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:
# w) o/ ~+ V* X5 v6 P咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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$ i7 k5 O: o/ VThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 O6 }6 H2 o$ D5 C3 ^" l+ B3 q3 |第一個答中有獎6 O+ ^- S4 C5 ^6 R4 d

6 ]/ b$ f; G) w3 |# _( O(x - ...

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. B# D3 j+ e+ Z, C: Y7 R1 E% @(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:# l: z( {9 U/ G7 m
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(x-x)= 0 ，所以答案係0，is it?

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* A5 R: }+ A' U8 j6 Q: ^% W唔似a.math題
7 n8 ?; _  r# c% r6 L. R似IQ題=.=2 V. t5 O2 t" C2 a
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[ 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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  T, L6 ?% ^6 ]7 T- I& m(x-x)= 0 ，所以答案係0，is it?

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3 o' q- g, z! Y2 ^# a' B2 ~. RBingo~

waikong

我係學校個學生會單張見過- Y1 t& W" t* p& |5 Z8 b  M
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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/ |6 C0 O" q% ~8 Z* c* ?2 @; m# C" T這條問題，貼落吹水版，名副其實
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: e* E" L5 W6 G* [[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]