0 votes 0 votes closed as a duplicate of: MadeEasy Full Length Test: Combinatory - Recurrence let an be the recurrenence relation which satisfies $a_{n}=4(a_{n-1}-a_{n-2})$ with $a_{1}$=2 and $a_{2}=8$. let X corresponds to the value of $a_{17}$.then values of $log_{2}(\left | x \right |)$ will be _____? am getting 18. Gate Fever asked Jan 11, 2019 closed Jan 11, 2019 by MiNiPanda Gate Fever 337 views comment Share Follow See all 3 Comments See all 3 3 Comments reply arvin commented Jan 11, 2019 reply Follow Share 21.1? 0 votes 0 votes Gate Fever commented Jan 11, 2019 reply Follow Share yes but how??i am very confused 0 votes 0 votes Shubhgupta commented Jan 11, 2019 reply Follow Share solve this by characteristic equation method above equation can be represent as - $r^{2}-4r+4=0$ 0 votes 0 votes Please log in or register to add a comment.