...*p=a ֵΪ3ıʽ? Ap+=2,*(p++) B

ȡӦֵַa[2]=3 *p++ȥֵƶָ a[1]=2


...4)B( - 9,2)ֱAB,һPʹAPģ=֮һ ...

Ϊ AP=1/3*AB OP-OA=1/3*(OB-OA) OP=1/3*OB+2/3*OA=1/3*(-92)+2/3*(3...


֪A( - 3,2),B(4, - 8),PAP=3PB,P...

AP=3BPУx+3=3(4-x) ãx=9/4 y-2=3(-8-y) ãy=-11/2 ԵPΪ(9/4,-11/2)...


...MACе,P,QΪBCȷֵ.BMAP,AQֱ...

::AAFBCBMӳF,BC=3aBP=PQ=QC=a;AM=CM,AFBC,AF:BC=AM:CM=1,AF=BC=3a,BD:DF=...


...many AP courses does your school offer(in

ӦһѶϢɿγй̶Ŀγʱ?ǵ/ Ҫǹƾѡ?ǵ/ ṩAPγ,...


ھABCD,AB=1,AD=3,PΪһ,AP=...

ƽ3/4=a^2+3b^2һ2(a^2+3b^2)-(a+3*b)^2>=0


֪{an}ʵp,qN+,ap+aq=ap+q,a1=1...

⣺߶ʵp,qN+ap+aq=ap+qҲap+q=ap+aq a16=a(15+1)=a15+a1 ͬa15=a14+a1a14=...


...1APΪԽξ?1 ĸԪɵľ,һΪ...

2..A3ֵͬ:1,2,3 ?Ѳ鿴ͬƵ


...ƽ+yƽ=9,һΪA(4,0),߶AP

.,:6x+y-13=0.(2)ԲΪ(a,a),Բ뾶Ϊa,ԲΪ:(x-a)^2+(y-a)^2=a^2,(1,0)...


...ȷֵ?ȷֵ,2ap=pb,p

1ab 2aΪ˵ 3Բȡ뾶ȡ3ȶΪMNP 4...