 鲜花( 634)  鸡蛋( 5)
|
Originally posted by knptmug at 2005-4-20 09:47 PM:% \) ?) |- w, X3 \# g; _5 x7 r
set small watermelon: x, middle watermelon y and big watermeton z. @3 L1 \, E, {: H7 g) t% u* D9 {
% }6 i2 j3 H# g5 u6 s# Qtwo simultaneous equations are set up:
' {7 J; N6 V+ g" B4 S1 h$ `0.5x+2y+5z=50 (1)
- G1 K0 ^: }4 G0 n/ Ix+y+z=50 (2)3 |5 K, |& T* Z/ i# y
Equation(1) means that the total amount paid is equal t ...
$ c! l- \: f8 B:lol::lol:/ S7 B7 q: U1 c5 t1 A7 g& \9 M
楼主的标题就是给你写的!
! u/ x8 l. {3 Z你看看我们智力超群的同学们回答的都多好啊! |
|