已知:(x≠0且x≠-1),,,…,,则等于 A.xB.x+1C.D.

已知:(x≠0且x≠-1),,…,,则等于 
A.xB.x+1C.D.

答案

p;【答案】C解析:

解:∵a1=x+1(x≠0且x≠-1),a2=1÷(1-a1),a3=1÷(1-a2),…,an=1÷(1-an-1),
∴a2=  ,a3= ,a4=x+1,…,
∴a3n= ,a3n+1=x+1,a3n+2=
∵2011=670×3+2,
∴a2012=
故选C.

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