| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
4 k+ x% U9 [. l2 ^2 V$ a
4 O2 t: M% o! P( _0 `9 J(x - a) = x - a7 y5 S1 E% r# m
(x - a) (x - b) = x^2 – ax – bx + ab
7 {5 m6 F# a( x(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
" _$ D" ]. N) F(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
, n/ L  z- O/ M0 Q- j7 F& T  P如此種推，* a8 N  P( U7 g! `8 x) V0 F
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ D* A* H" \$ m8 g. J) t
4 F5 m5 n1 Q+ _# E) {2 a6 F" 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  i& }6 M/ l+ @

Originally posted by Triangel at 2007-4-18 01:26 PM:3 r) e0 a* p' S. n2 F8 D9 u3 r" P
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc3 }+ G( n: ~/ l) u& u6 b) w# g

+ y! J, D) W# y( G

2 @( Q# |2 g' t' Y

8 Q. k% k5 o* R) f4 g[ 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:
1 }0 P+ J' F) c0 K% \/ T咁難既=.="% e% r" `- K( ]" ]9 I
; [5 @: n5 T2 _7 n4 N. U+ @, \
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

5 A' s+ O3 b& M3 w4 }$ T
& B6 k4 D- l$ S: _3 l+ z  f
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
6 v* r  V+ `1 s3 k; [第一個答中有獎9 x( y- o: c+ j" }" c  I
  @0 m% A& r& u$ i7 F% u# }
(x - ...

) L$ F0 F2 p; a: b4 x! ]4 v4 M* a) @4 a
(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:/ I, d* t7 G: Z0 J( [1 ?7 p
# \4 W0 I% i5 w) `; G/ [
5 f. f8 ~& o1 E! ^
(x-x)= 0 ，所以答案係0，is it?

2 I) U- w3 x& l, k! N

$ d) s8 N6 i$ N4 E! Q: k- ]% ~, A. }7 ]  ~# W3 T
唔似a.math題
9 o- n9 E1 F  w+ M9 I% d) Z& r* p! F似IQ題=.=- ~9 p1 H) G( \$ s2 G5 N( O1 l$ P

6 @: ?9 @9 f, D4 s0 u[ 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:% G$ w0 ]' l( j6 H5 X# F  W
( U; `! Q- l/ }' _- _" p; X# `
8 ~: `& y6 U  K* f8 _
(x-x)= 0 ，所以答案係0，is it?

# Y4 w" l! B7 ?4 V1 K
& ?8 y: {9 T4 D" ?
Bingo~

waikong

我係學校個學生會單張見過/ r) m4 V3 ?& j! k# I( ]% }9 [6 [
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.........1 ]) p; A! ^5 V7 h3 }3 v& C

- F: D: }+ o- u3 i, o# _這條問題，貼落吹水版，名副其實
+ j  l/ X; o; C& ?0 x! w0 m! f" ]& }* z- F  M7 m7 k" f
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]