Which one of the following is a closed form expression for the generating function of the sequence {a_n}, where a_n = 2n+3 for all n= 0,1,2…..?

GATE 2018 Previous Year Paper Solution Question 1 – Computer Science

In this video questions which were asked in the exam of GATE 2018 are solved.

Question :- Which one of the following is a closed form expression for the generating function of the sequence {a_n}, where a_n = 2n+3 for all n= 0,1,2…..?
A. 3/〖(1-x)〗^2
B. 3x/〖(1-x)〗^2
C. (2-x)/〖(1-x)〗^2
D. (3-x)/〖(1-x)〗^2

Solution is explained in the video.