| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎+ I! L6 n' D$ q/ z3 i

" v6 v# ]* t2 J, M2 S! C(x - a) = x - a/ W2 |9 J; D8 ^! ]
(x - a) (x - b) = x^2 – ax – bx + ab5 y# m, R' Q8 Q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc4 I5 E* T$ o/ Z: A" b
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
& H. O  q' i: _  i如此種推，
# f4 P- G, n7 _' b8 y" d/ ?* P(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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[ 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:
# l/ |5 B  r6 p) \2 @(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc5 z; }5 `: a% f
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. n5 r: M, S5 Z[ 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:
. J( @; d3 {+ f' X咁難既=.="
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* }5 L! u! s' X[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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' z' V1 k/ [6 L9 N( Y5 m2 [' |2 JThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:9 t0 o& ]/ L$ u5 z! b  K' x
第一個答中有獎
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" T; y- x2 j2 q(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:' z1 G! D5 V0 Z5 j- j: O

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(x-x)= 0 ，所以答案係0，is it?

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0 F/ C/ f. {# p+ c3 L7 z5 W, q唔似a.math題- O! _3 e4 s1 F5 [' S4 b7 i& ^
似IQ題=.=/ M+ Q/ |' z% n* ?/ q
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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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" h' M, ]$ @$ r8 S9 e(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過& U# t- f6 U3 I$ @
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.........& }8 x  Z. A: ?& N/ a, `% {
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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 ]