2MORE-XUHUI 14

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2MORE-XUHUI 14
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2MORE-XUHUI 14
2MORE-XUHUI 14

2MORE-XUHUI 14
a1=a
a2=1/2(90-a1)
a3=1/2(90-a2)
an=1/2[90-a(n-1)]=45-1/2a(n-1)
x-an=-1/2[x-a(n-1)]
an=-3x/2-1/2a(n-1)
-3x/2=45,x=30
30-an=-1/2[30-a(n-1)]
30-an=(-1/2)^(n-1)a1
an=30-(-1/2)^(n-1)a1
lim an=30-0=30°
n---->无穷

2MORE-XUHUI 14 xuhui 58 英语翻译23/F Grand Gateway Tower 2,3 Hongqiao lu,Xuhui District 高中化学?多谢!2more-XUHUI 58 Na2O2曾经是潜水艇或航天器中最理想的供氧剂.下表是人体呼出气体的成分（均为体积百分含量）.为保持航天器中空气成分恒定,并充分利用资源,需对人体呼出的 求大神帮忙写成中文谐音nAt 6:10 on November 14,2008 around Shanghai Xuhui Campus.,a students’dormitory get fire.Four girls jumped from the six floor dormitory balcony toescape,died on the spot,it’s the most recent tragic incidents on ca ----2more-minhang22 2more-changning17 2more-changning 12 More More More, more more more More more more more