 鲜花( 634)  鸡蛋( 5)
|
Originally posted by knptmug at 2005-4-20 09:47 PM:
! s) h6 s! N. R5 I+ l, ^1 B4 bset small watermelon: x, middle watermelon y and big watermeton z3 o, M* b1 A! L( ]3 z1 F
3 N( q+ u2 r2 x" l7 N2 f0 R
two simultaneous equations are set up:
- c/ K+ K2 f1 i* R0 w3 }9 \; W# |2 a0.5x+2y+5z=50 (1)
* e8 N. {' G3 S+ S: u- ]: F( jx+y+z=50 (2)
! c2 }, V6 I9 R8 WEquation(1) means that the total amount paid is equal t ... , b. O8 G5 n/ P1 _
:lol::lol:" L4 k8 x5 H3 n2 X4 }% L
楼主的标题就是给你写的!: |7 Y3 `" R1 o S$ r% |
你看看我们智力超群的同学们回答的都多好啊! |
|