数列{an},a1=3,an*a(n+1)=(1/2)^n,求an
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数列{an},a1=3,an*a(n+1)=(1/2)^n,求an
![数列{an},a1=3,an*a(n+1)=(1/2)^n,求an](/uploads/image/z/17480721-57-1.jpg?t=%E6%95%B0%E5%88%97%7Ban%7D%2Ca1%3D3%2Can%2Aa%28n%2B1%29%3D%281%2F2%29%5En%2C%E6%B1%82an)
a(2n+1)/a(2n-1)=1/2
a1=3
a1*a2=1/2
a2=1/6
n=2k-1 an = 3 * (1/2)^(k-1)
n=2k an = 1/6 * (1/2)^(k-1)
a1=3
a1*a2=1/2
a2=1/6
n=2k-1 an = 3 * (1/2)^(k-1)
n=2k an = 1/6 * (1/2)^(k-1)
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