If x1, x2, x3,…,xn are n non-zero real numbers such (x12+x22+x32+⋯+xn−12)(x22+x32+x42+⋯+xn2)≤(x1x2+x2x3+x3x4+⋯+xn−1xn)2 then x1, x2, x3,…,xn are in
Note:
- AP denotes an arithmetic progression.
- AGP denotes an arithmetic geometric progression.
- GP denotes an geometric progression.
- HP denotes an harmonic progression.