1. A sequence of numbers can be defined recursively, that is the next number can be defined as a function of one or more of the previous numbers (the Fibonacci Sequence is a well known example of this). A recursive sequence is given by the recursive formula Xn = 3xn-1+ 2x,n–2 where 11 = 1 and x2 = 1. (a) Write a small program, using a loop, to calculate and display the first 10 terms, a1,..., x10- If we do not need to store past results for (say) plotting purposes we do not need to save past values. In your code do not create a vector of these values, that is do not use subscripts( ie x(1), x(2) etc) in your code. The calculation that is repeated, ie xn = 3xn-1+2xn-2, has the form c= 36 + 2a. You should update the values in a and b (as the relevant older values) each time through the loop after c has been calculated. (b) Now create a version where you do create a vector saving the values of xn and then plot these values against n using a semi-log axis (log in the "y-axis"). Give the plot a title and tight axis and use '.-r' dictates that we join the dots with lines and use the colour read.
1. A sequence of numbers can be defined recursively, that is the next number can be defined as a function of one or more of the previous numbers (the Fibonacci Sequence is a well known example of this). A recursive sequence is given by the recursive formula Xn = 3xn-1+ 2x,n–2 where 11 = 1 and x2 = 1. (a) Write a small program, using a loop, to calculate and display the first 10 terms, a1,..., x10- If we do not need to store past results for (say) plotting purposes we do not need to save past values. In your code do not create a vector of these values, that is do not use subscripts( ie x(1), x(2) etc) in your code. The calculation that is repeated, ie xn = 3xn-1+2xn-2, has the form c= 36 + 2a. You should update the values in a and b (as the relevant older values) each time through the loop after c has been calculated. (b) Now create a version where you do create a vector saving the values of xn and then plot these values against n using a semi-log axis (log in the "y-axis"). Give the plot a title and tight axis and use '.-r' dictates that we join the dots with lines and use the colour read.
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter15: Recursion
Section: Chapter Questions
Problem 1TF
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