高一数学数列问题~~~~~请各位高手帮帮忙数列{aˇn}中,aˇ1=1,当n>=2时,其前n项和Sˇn满足S^2=aˇn(Sˇn-1/2) (1)求Sˇn得aˇn (2)设bˇn=Sˇn/(2n+1),数列{bˇn}的前n项和为Tˇn,求Tˇn

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