 鲜花( 634)  鸡蛋( 5)
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Originally posted by knptmug at 2005-4-20 09:47 PM:- i; e. f8 X$ [, h" N% t
set small watermelon: x, middle watermelon y and big watermeton z8 f( Z- Q% I$ H
/ G, |, k0 N8 H( Xtwo simultaneous equations are set up:
% O: |" e1 z x7 V6 n! a$ S0.5x+2y+5z=50 (1)
# {3 d; P- |; r7 P+ }. ux+y+z=50 (2)" V5 u* W! [, x8 ~
Equation(1) means that the total amount paid is equal t ...
6 _6 q& g4 f' H; }5 l. ?5 S, p& w& a6 O:lol::lol:; {0 [0 V2 x. ^! x6 s
楼主的标题就是给你写的!7 }. ~9 V8 z1 O) B
你看看我们智力超群的同学们回答的都多好啊! |
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