ⲻһԲϻʲô˼?

ⲻһԲϻʲô˼? 2013-06-04 20:50 쿴10 | ֻ֪ | :ѧ иõĴ : Ĭ|ʱ1ش 2013-06-04 20:59qq1011093549|һڵpartyľ,һ׵˳:ⲻһԲ,ƨɾǹꡣ ǰһ˵Ůĵط(


һԲһԲת,1Ȧ2Ȧ?

2ȦһȦתһȦת1ԲͶԲ뾶ʱԲƽֳ4ȷݣ˳ʱӱA(ңB£C󣩣Dϣ...


뾶Ϊ1һԲy=xڹ,ԲĻ...

@PauseAndPonderѣԲڹʱtȡ㣬Ϊ˼Բĵλã=y(1+y2)3/2=2(1+4x2)3/2=1 ...


һԲ?

10һһԲ10


һԲ, - - - ֱ, - - - 뾶.

ͬһԲ,ֱ,뾶. ʴΪ:,. ֱͨԲIJ˶Բϵ߶;뾶ԲĺԲһ߶;ݴ˿֪:һԲ,...


һԲİ뾶1,ֱ - - - ,ܳ...

(1)12=2();(2)23.141=6.28();(3)3.1412=3.141=3.14(ƽ).:Բֱ2,ܳ6.28,3.14ƽ.ʴΪ:2,...


ΪʲôһԲ,Բֻ;һԲ...

ֻ㣬ԲʵԲǵдϣпܵԲһд޷ȷԲҵ һ...


ˮӲһԲĺûһǵĺ?

1. Ӳҵ״ڷˮЧûоԵĺû֮֡2. һԪӲԲͺгΪڷˮʵܹˡ3. һǵӲȻС...


һԲԲ(Apollonius֮) - ٶȾ

3 DԲvߡ4 ߵķͼξҪԲ5 BCλuڲʱԲҲܵuڲ6 Bλu棬C...


һԲ,ֱ1.3,Ƕƽ?

s:,r:뾶,d:ֱs=*r² r=d/2 =3.1416926.s=*0.65²=1.32665ƽ