已知数列[an}满足a1=1,a(n+1)=2an+1,(1),求证;{an+1}是等比数列.(2)求an的通项公式.
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/27 02:57:13
已知数列[an}满足a1=1,a(n+1)=2an+1,(1),求证;{an+1}是等比数列.(2)求an的通项公式.已知数列[an}满足a1=1,a(n+1)=2an+1,(1),求证;{an+1}
已知数列[an}满足a1=1,a(n+1)=2an+1,(1),求证;{an+1}是等比数列.(2)求an的通项公式.
已知数列[an}满足a1=1,a(n+1)=2an+1,(1),求证;{an+1}是等比数列.(2)求an的通项公式.
已知数列[an}满足a1=1,a(n+1)=2an+1,(1),求证;{an+1}是等比数列.(2)求an的通项公式.
由a1=1,a(n+1)=2an+1,可得,a1=1,a2=3,a3=7,a4=15.又a(n+1)+1=2[an+1].===>[a(n+1)+1]/(an+1)=2.∴{an+1}是首项为2,公比为2的等比数列.∴an+1=2^n.∴通项为an=2^n-1.(n=1,2,3,).
已知数列{an}满足a(n+1)=an+n,a1=1,则an=
已知数列{an}满足a(n+1)=an+lg2,a1=1,求an
已知数列{an}满足a1=1,3a(n+1)+an-7
已知数列an满足a1=1,a(n+1)=an/(3an+1) 求数列通项公式
已知数列an满足:a1=1,an-a(n-1)=n n大于等于2 求an
已知数列{an}满足a1=33,a(n+1)-an=2n,则an/n的最小值
已知数列{an}满足a1=33,a(n+1)-an=2n,求an/n的最小值
已知数列an满足a1=100,a(n+1)-an=2n,则(an)/n的最小值为
已知数列an满足a1=2,an=a(n-1)+2n,(n≥2),求an
已知数列满足a1=1,an-a(n-1)=n-1,求其通项
已知数列{an}满足a1=1,a(n+1)=nan n+1是角标
已知数列{an}满足a1=2,a(n+1)-an=a(n+1)*an,则a31=?
已知数列{a}满足a1=1/2,a(n+1)=an+1/(n^2+n),求an已知数列{a}满足a1=1/2,a(n+1)=an+1/(n^2+n),求an
已知数列{an}满足a(n+1)=an+3n+2,且a1=2,求an=?
已知数列{an}满足a1=5,a(n+1)=an+6n+6,则an=
已知数列an满足a(n+1)=an+3n+2,且a1=2,求an
已知数列{an}满足条件a1=3,且a( n+1)-an=(20)^n+n,求通项公式已知数列{an}满足条件a1=3,且a( n+1)-an=(2)^n+n,求通项公式
已知数列an满足a1=1,a(n+1)=an/(3an+2),则an=?