若{an}是等比数列,其公比是q,且-a5,a4,a6成等差数列,则q等于A,1或2B,1或-2C,-1或-2D,-1或2

若{an}是等比数列,其公比是q,且-a5,a4,a6成等差数列,则q等于?(求详解) 若an是等比数列,其公比是q,且 -a5,a4,a6成等差数列,则q等于（） 若｛an｝是等比数列,其公比是q ,且—a5 ,a4 ,a6成等差数列,则q等于? 设{an}是无穷等比数列,且公比q满足|q| 、若{an}是等比数列,其公比是q,其-a5,a4,a6成等差数列,求公比q 若{an}是一个递减的等比数列,且公比为q,则该数列的A.q 若{an}是一个递增的等比数列,公比为q,则该数列的a?q? 设数列an是等比数列,其前n项和为Sn ,且Sn=3a3 求公比q 若{an}是等比数列,其公比是q,且-a5,a4,a6成等差数列,则q等于A,1或2B,1或-2C,-1或-2D,-1或2 {an}是公比为q的等比数列,且-a5,a4,a6成等差数列,则q= 关于等比数列的题设数列{an}是等比数列,其前n项和为Sn,且S3=3a3,求公比q的值 等比数列{an}中,其公比q 若{an}为等比数列,sn为其前n项和是s3=3a3,则公比q为 若等比数列an公比为q,Sn是其前n项和,若lim(an+1/Sn)=q-1,求q的取值范围 若数列｛an｝是公比为q的等比数列,且bn=lgan,求证｛bn｝为等差数列 若{an}是等比数列,a4a7=-512,a3+a8=124且公比q为整数,则a10= 已知数列{an}是无穷等比数列,且公比q满足0 已知数列{An}是无穷等比数列,且公比q满足0