Introduction to EngineeringMATLAB – 7Script Files - 2

Agenda Script files continued

EXAMPLE

Write a script file that determines the balance in a saving account at

the end of every year for the first 10 years. Initial investment of

$1,000 and interest rate of 6.5% compounded annually.

Display the information in a table.

For an initial investment of A, and interest rate of r, the balance B

after n years is given by:

nrAB 1

format bank

yr = [1:10];

% Creating a vector of year numbers.

balance = 1000*1.065.^yr;

% Creating a vector of the balance.

table_yr_blnc(:,1)=yr';

% Substituting the yr vector in the first column of the table matrix.

table_yr_blnc(:,2)=balance';

% Substituting the balance vector in the second column of the table matrix.

disp(' YEAR ACCOUNT') % Display titles.

disp(' BALANCE ($)') % Display titles.

disp(' ') % Display an empty line.

disp(table_yr_blnc) % Display the table.

SOLUTIONReferenced in first MATLAB lecture

>> Lecture4Example4

YEAR ACCOUNT

BALANCE ($)

1.00 1065.00

2.00 1134.22

3.00 1207.95

4.00 1286.47

5.00 1370.09

6.00 1459.14

7.00 1553.99

8.00 1655.00

9.00 1762.57

10.00 1877.14

SOLUTIONExecuting the script file in the command window gives:

ASSIGNMENT 5:

1. Problem 32 page 61 in the textbook.

2. Problem 33 page 61 in the textbook.

3. Problem 4 page 161 in the textbook.

For each problem write a script file and execute it in the command window.For each problem, the first two lines of the script file are:% Assignment 5, Problem (write the number of the problem)% Name: (first name, last name)

Submit a printout of the script file, and a printout of the command window.