.... 2014-2015ѧ㽭ʡ꼶ϣĩѧԾ
һϸѡһѡ10С⣬ÿС3֣30֣ÿСĸѡУֻһȷģעöֲͬķѡȡȷ𰸣 13֣ĸУΪǣ A B|| C2 D|| 23֣мȷǣ A
B
=2
C
D2332=72
33֣ôʽʾabƽab˻IJȷǣ Aa2+b2ab
Ba+b2ab Ca2b2ab Da2+b2ab
43֣ͳƣ2013ҹ֧13940000ũǨŮڳÿѧɱʾΪ A1.394107 B13.94107 C1.394106 D13.94105
53֣2am1b25abnԺϲһm+nֵǣ A1
B2
C3
D4
63֣ͼAֱlһ㣬BCEDֱlϣADlDΪ㣬AC=8cmAD=6cmAE=7cmAB=13cmôAֱlľǣ
A13cm B8cm C7cm D6cm
73֣ʽӱȷǣ
Aa1=a1 B3a5a=2aC2a+b=2a+b D|Щ3|=3 83֣m϶ӦĵΪMm1m
ʾȷǣ
ʱԭʽáԭʽ棬ҲԳһ飬Ҫȷÿһá=ӡдa=ʱԭʽ==ĸֵûֱӸʱҪдһЩĸֵȷǹؼ״㣺ȥʱ©ˣӦ˱ÿһڲ˱ţҪŶţϲͬʱ©ٳһ䳣ĸߵͬעϲס
1ҳ16ҳ
A
C
B D
93֣˵ȷһֱߣABBAͬһߣȵĽǶԶǣߺʹڵߵ֮߶̣ȷǣ
A٢ۢ B٢ڢ C٢
Dڢۢ
103֣֪߶AB=8cmֱABһCBC=4cmM߶ACе㣬߶AMijΪ A2cm B4cm C2cm6cm D4cm6cm
һ6С⣬ÿС4֣24֣Ҫע濴ĿҪдݣд.
114֣1=4050䣬1Ϊ 1IJΪ 124֣ʵ
0
1.4140.1311311133
֮ζһ1У
134֣xķ3x+2a=6Ľa1aֵ 144֣a3b=6ôʽ53a+9bֵ
154֣x=3ʱʽ3x+4+m2mxֵȣm= 164֣ÿе֮䶼ͬĹɣֹɣ4мmΪ nεмΪ únĴʽʾ
ȫһ𣨱7С⣬66֣ӦдҪ˵֤̻.еĿеѣôԼдĽд
2ҳ16ҳ