engineering recuitment NIC NIELIT Scientist B 2023 Mock Test Engineering Mathematics Combinatorics Generating Functions
What is the generating function of the sequence {1,1,3,1,1,1,1……………}?
1
(1 - x)-2
2
(1 + 2x2 – 2x3)/ (1-x)
3
(x2 + x)/ (1-x)3
4
2/(1-x)3