1 votes 1 votes For each of these generating functions, provide a closed formula for the sequence it determines. $a) (3x − 4)^{3}$ $b) (x^{3} + 1)^{3}$ Mathematical Logic discrete-mathematics kenneth-rosen generating-functions + – Sandy Sharma asked Dec 29, 2018 edited Mar 3, 2019 by Pooja Khatri Sandy Sharma 1.1k views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply Lakshman Bhaiya commented Dec 29, 2018 reply Follow Share Apply Binomial theorem and expand the term, you will easily get the closed form (or) generating sequence 1 votes 1 votes Sandy Sharma commented Dec 29, 2018 reply Follow Share Yes , it gives correct solution. I was putting x=0 x=1 x=2 ......and so on! And was not getting the solution. Do you always need to expand to solve these! 0 votes 0 votes Lakshman Bhaiya commented Dec 29, 2018 reply Follow Share Yes, it is an error-free method. if the option is given then try to put some values and eliminate the options. 0 votes 0 votes Please log in or register to add a comment.