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發表於 2008-1-18 08:56 AM
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Originally posted by cutec at 2008-1-18 08:26 AM:* T9 v* P! J! A
冇答案ga.... h M& e9 J, ^* p" E
& Y7 M7 w+ y5 e) v: V; ?
2條equation solve 唔到3個unknown ga....
' H- S; m5 M* B+ ragree
6 d, M) V8 p* Z: _2 c! w
, M% j6 W/ ~8 S3 x% M2 equations 2 unknows
2 q7 O y _4 N0 P+ P2 g
* K0 s) _& B' zif 3 unknows there should be 3 equations * k% \- s* H* J2 V* K* H
& A7 d, N& T& ]: M% o5 kmake it simple ! b {7 a: i6 O5 t6 l
0 ?- t9 S p! ~1 l% q9 W8 y, vsay 1 \) v6 w: y* Z+ M7 k2 k
m) R+ U& j; P& J. B) Ya + b +c = 3
! {4 }0 p& B' w1 W
8 U1 ~& U# y- p8 Y$ r8 Ta+b = 2- S* l' E' Z8 `0 c
7 `+ b' d: ^% D1 Mthen c is 1
5 O/ y8 C1 B' p; k. X# |* {! f
5 g' U: x. g/ {% za = 2 - b
4 u/ J' p) v3 [
6 Q' g3 x7 d5 M; zso 0 = 0
& F- {: U+ p w. d' L# a9 p% _! I w
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