已知数列{an}的通项公式an=https://bgk-photo.cdn.bcebos.com/0df3d7ca7bcb0a46592936587b63f6246b60af4c.jpg,若ak=https://bgk-photo.cdn.bcebos.com/d62a6059252dd42a9202bcca133b5bb5c9eab84c.jpg,则a2k= ( )A、spanB、https://bgk-photo.cdn.bcebos.com/d1160924ab18972b9c15bdabf6cd7b899e510aa7.jpgC、99D、spanE、https://bgk-photo.cdn.bcebos.com/63d9f2d3572c11df39da0242732762d0f703c24c.jpgF、143
已知数列{an}的通项公式an=https://bgk-photo.cdn.bcebos.com/0df3d7ca7bcb0a46592936587b63f6246b60af4c.jpg,若ak=https://bgk-photo.cdn.bcebos.com/d62a6059252dd42a9202bcca133b5bb5c9eab84c.jpg,则a2k= ( )
A、span
B、https://bgk-photo.cdn.bcebos.com/d1160924ab18972b9c15bdabf6cd7b899e510aa7.jpg
C、99
D、span
E、https://bgk-photo.cdn.bcebos.com/63d9f2d3572c11df39da0242732762d0f703c24c.jpg
F、143
发布时间：2025-07-15 17:36:11
