递推数列求通项
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递推数列求通项递推数列求通项递推数列求通项一阶递推知道a1就行了啊,a2=B多余条件吧.a(n+1)/(n+1)+12(n+2)ln(n+1)=a(n-1)/(n-1)+12nln(n-1)+6lnn
递推数列求通项
递推数列求通项
递推数列求通项
一阶递推知道a1就行了啊,a2=B多余条件吧.
a(n+1)/(n+1)+12(n+2)ln(n+1)=a(n-1)/(n-1)+12nln(n-1)+6lnn^2(n-1)(n+1)
a(2n+1)=(2n+1)(A+12ln(2n+1)!-6(4n+5)ln(2n+1))
a(2n)=2n(B/2+12ln(2n)!+30ln2-6(4n+3)ln(2n))