Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:; T4 w# l! J* u; Y1 h# P
冇答案ga....! X/ f' I. l) r2 f+ j8 g
( j& A6 e$ k0 E# y4 }& K, q
2條equation solve 唔到3個unknown ga....

( h* R* M( J+ U: `- x1 a
6 H* B: V$ n2 Q9 Tagree
- s* Z+ E( ]  `1 [) T' r
7 N3 D% y/ n$ f& h2 equations 2 unknows) ]' y$ {0 x  Y, W

* {9 u4 c5 m4 }) nif 3 unknows there should be 3 equations ) ^& I( E$ l8 E3 C. m# E1 l, `
, H# N- @' J# l' l& W) Y2 a
make it simple
1 Z9 z3 n$ {+ |4 n1 w$ d7 t( r& D. b
say 5 J" b8 q6 z9 m5 A

4 m* E3 x: _! la + b +c = 30 w: d1 u% y& l1 d8 j6 v4 E4 X

" ?4 b" q0 f3 n6 }- U% W  |a+b = 2' R' J6 l/ @. N6 L
1 P( @5 @& V3 c5 m8 E* v) `1 T
then c is 1 ' q% j' j% Z, X/ ^4 B/ n  Y. k

* U3 P9 |+ d$ f& S( e, q6 Ja = 2 - b $ j4 }9 m# j: P7 T0 Y

0 L( U/ s* I& |- ~so 0 = 0
! o; @/ ^! G  ]1 j
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