等差数列中,An为前n项和,am-1+am+1-am^2=0. S2m-1=38. 则m等于什么
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/02 00:38:31
xTN@B Ǝ,ho`Zio'wK"9*&U(R VU! ~
'Yc(ݵzs{ǯ/7t4ὸ5?ecPf8&e]b["D
xt|:Kot7֮L#hyU_S%.e2wf۶2Dqծ8K,_/eTaZU˚+ٮPN;W(ì/k
2~mM[um/70@XB(Z#@ O/_&(Qe#mV%ωm
Vq:ϰ+z1Gt?w); 0sV(8P,z}=C=F6_z.|,RӈEx]N*bQmP/Z{g? I$EÒ:4yV}~rwt2#ޏ5b%hhq!;^v~I!P&Cگ7RH
为什么等差数列中an=A(2n-1)?An为等差数列前n项和.
等差数列中,An为前n项和,am-1+am+1-am^2=0. S2m-1=38. 则m等于什么
求助~求助~有关数列的填空题~!1已知数列{an}中的前n项和为Sn=3n^2+n+1,则an=________2.在等差数列{an}中,am=n,an=m(m不等于n),a(m+n)=_____________3.等差数列{an}中,a1+a2+.+a50=200,a51+a52+...+a100=2700则公差为________
1、等差数列{an}的前n项和为Sn,已知am-1+am+1-am^2=0,S2m-1=38,则m=___ 2、已知(an}为等差数列,a1+a3+a...1、等差数列{an}的前n项和为Sn,已知am-1+am+1-am^2=0,S2m-1=38,则m=___2、已知(an}为等差数列,a1+a3+a5=105,a2+a4+a6
等差数列题等差数列an的前n项和为Sn,已知am-1 + am+1 -am^2 =0,S2m-1=38,则m=
高中等差数列题 坐等高人!等差数列{an}前n项和为Sn,am +am+1 +…..+a n+1 =0 (m<n),则Sm+n =?
等差数列{an}中,Sn是其前n项和,公差为d不等于0,(1)若an=m,am=n,求am+n.(2)若S2=S6,求S8
等差数列{an}的前n项和为Sn,已知am-1 +am+1 -(am)^2=0,S2m-1=38,求mM-1,M+1 都是在a的右下角am^2的m是a 右下角的
等差数列AN的前n项和为Sn,若S2m-1/2m-1=10,则am=
等差数列An的前n项和为Sn,a1=1,S3=a5,Am=2011求m
等差数列{An}中,前n项和Sn=an2+(a-1).n+(a+2),则An=为什不能用Sn-Sn-1算
在等差数列{an}中,其前n项和为Sn,若Sn=an2+(a+1)n+a+2,则an=
在等差数列{an}中,其前n项和为Sn,若Sn=an2+(a+1)n+a+2,则an=
等差数列{an}的前n项和为Sn,已知am-1+am+1-am^2=0,S2m-1=38,则m=___
等差数列{An},的前n项和为Sn,已知Am-1+Am+1-(Am)*2=0,S2m-1=38,则m=?
等差数列{an}的前n项和为Sn,已知am-1+am+1-am^2=0,S2m-1=38,求m
等差数列{an}的前n项和为Sn,已知am-1+am+1-am²=0,S2m-1=38,求m的值
等差数列{an}的前n项和为Sn,已知am-1+am+1-am^2=0,S2m-1=38,则m=___ 尽快好吧