|
- 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:* O, b; n' `3 `% {* P Q l: ^* E. K
冇答案ga....1 y. [, @4 C( |3 L3 {' H- f8 d
! |9 b+ ?. K6 b( P5 I [2條equation solve 唔到3個unknown ga....
agree " m- w8 A T A0 D3 L: N
* ~6 W7 Y* u: a0 l
2 equations 2 unknows+ }; P4 L2 R* t0 B5 [
+ X h" h8 h$ G
if 3 unknows there should be 3 equations 0 `* q. Y" ~8 X: v; Y
. ~. `8 ~9 p0 C, X+ X
make it simple
( Y# w) q' B( Z" S X0 k& Z
% n: q8 }+ L, j i0 Jsay 2 T" D; m. e N% s' a' P
- t: l7 N/ b8 [2 J
a + b +c = 3
$ }: v0 H- [, p( s/ y3 X; y
; I" d* R: S4 z @a+b = 27 x% |: N1 Q [+ ]7 C2 m
! S$ q: ?3 b5 X# B& M! Q; v* e- k& @then c is 1
' |5 f, a/ R# g# C' a( ]* e u& @3 k' F0 U, }8 L3 J
a = 2 - b % s; b3 u6 \2 ^: ?% L; U# e% u6 S1 ^# I
1 S$ m* D2 p: z2 J" Z. Aso 0 = 0 ; o' T# x8 A/ J, @5 M
- D: M( s3 y$ w* N( c
 |
|
