已知{an}满足a1=3,an+1=2an+1,
已知数列{an}满足a1=1,a2=3,an+2=3an+1-2an求an
已知数列an满足 a1=1/2,an+1=3an/an+3求证1/an为等差数列
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知{an}满足a1=3,an+1=2an+1,
已知数列{an}满足an+1=2an-1,a1=3,
已知数列{an}满足a1=2,an+1=2an+3.
已知数列{an}满足,a1=2,a(n+1)=3根号an,求通项an
已知数列an满足a1=1.a2=3,an+2=3an+1-2an
已知数列{an}满足a1=1/2,an+1=3an+1,求数列{an}通项公式
已知数列(an)满足an+1=2an+3×2∧n,a1=2求an
已知数列an满足a1=1,1/an+1=根号1/an^2+2,an>0,求an
数列{an}满足a1=1,且an=an-1+3n-2,求an