a1=1,an+1=2n+1,则an=2n-1...
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a1=1,an+1=2n+1,则an=2n-1...a1=1,an+1=2n+1,则an=2n-1...a1=1,an+1=2n+1,则an=2n-1...设m=n+1则将m代入a(n+1)=2n+1
a1=1,an+1=2n+1,则an=2n-1...
a1=1,an+1=2n+1,则an=2n-1...
a1=1,an+1=2n+1,则an=2n-1...
设m=n+1
则将m代入a(n+1)=2n+1
得到a(m)=2(m-1)-1=2m-1
a(m)=2m-1
也就是 a(n)=2n-1
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