|
- 帖子
- 800
- 精華
- 0
- 威望
- 26
- 魅力
- 45
- 讚好
- 0
- 性別
- 男
|
1#
發表於 2008-1-18 08:56 AM
| 顯示全部帖子
Originally posted by cutec at 2008-1-18 08:26 AM:4 e0 I9 z4 \" c# M
冇答案ga....
3 F9 I. V2 H6 s r' `5 L' \: S8 }1 Q8 l. x
2條equation solve 唔到3個unknown ga....
5 C, B# G6 T4 m% B7 Sagree
3 ^- ]' y& W5 N, {8 @* _* d
; V5 x' j2 u) |/ I- _/ w2 equations 2 unknows. R* K# R* Y" O9 r4 W8 H+ U f5 C( T
# G4 j5 K8 v' K2 ]3 X/ J: Aif 3 unknows there should be 3 equations ! J, p! ]3 b% ~+ x- N5 j5 A
6 M! i ]: o7 {- m( Z
make it simple & |% h) j' s1 `( h
7 _. S; L7 Z( l) z0 _4 ssay Q0 q, K, Y+ N' m, M8 N$ Z
/ _( d' F4 e5 i1 [! s
a + b +c = 3' N3 L/ a4 z( \# o; h
- y$ E0 l2 G9 P6 |
a+b = 2: h+ D9 m$ _7 Q, s
) v2 ~/ ~0 }" b' `2 g* q; q: athen c is 1
# j' C' m2 m& L0 C) c: M7 e, n/ J6 d8 Z; S' Z) w9 J
a = 2 - b ' v7 x b: b! q. V
4 \& y, W1 S+ |' X; O5 Dso 0 = 0
0 G3 {: C3 \( K# }6 C6 k! z# G: d: S
 |
|
