a1=1/2,每个数都等于“1与它前面那个数的差的倒数”试试算:a2=—,a3=—,a4=—,a5=—,a2004_
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![a1=1/2,每个数都等于“1与它前面那个数的差的倒数”试试算:a2=—,a3=—,a4=—,a5=—,a2004_](/uploads/image/z/5471687-47-7.jpg?t=a1%3D1%2F2%2C%E6%AF%8F%E4%B8%AA%E6%95%B0%E9%83%BD%E7%AD%89%E4%BA%8E%E2%80%9C1%E4%B8%8E%E5%AE%83%E5%89%8D%E9%9D%A2%E9%82%A3%E4%B8%AA%E6%95%B0%E7%9A%84%E5%B7%AE%E7%9A%84%E5%80%92%E6%95%B0%E2%80%9D%E8%AF%95%E8%AF%95%E7%AE%97%EF%BC%9Aa2%3D%E2%80%94%2Ca3%3D%E2%80%94%2Ca4%3D%E2%80%94%2Ca5%3D%E2%80%94%2Ca2004_)
a1=1/2,每个数都等于“1与它前面那个数的差的倒数”试试算:a2=—,a3=—,a4=—,a5=—,a2004_
a1=1/2,每个数都等于“1与它前面那个数的差的倒数”试试算:a2=—,a3=—,a4=—,a5=—,a2004_
a1=1/2,每个数都等于“1与它前面那个数的差的倒数”试试算:a2=—,a3=—,a4=—,a5=—,a2004_
a2=2,a3=-1,a4=1/2,a5=2,a2004=-1