Engineering Fundamentals: An Introduction to Engineering, 4th ed.c

470 Chapter 15 MATLAB

TABLE 15.6 The Relationship between the Interest

Earned and the Amount Deposited

Dollar

Interest Rate

Amount 0.06 0.07 0.08

1000 60 70 80

1250 75 87.5 100

1500 90 105 120

1750 105 122.5 140

2000 120 140 160

2250 135 157.5 180

2500 150 175 200

2750 165 192.5 220

3000 180 210 240

TABLE 15.5 Examples of the MATLAB’s Matrix Operations

Example: A and B are

Matrices Which You

Operation Symbols or Commands Have Defined

Addition + AB

Subtraction - AB

Multiplication * A*B

Transpose matrix name¿ A¿

Inverse inv(matrix name) inv(A)

Determinant det(matrix name) det(A)

Eigenvalues eig(matrix name) eig(A)

Matrix left division \ See Example 15.5

(uses Gauss elimination

to solve a set of linear

equations)

Example 14.2 Using MATLAB, create a table that shows the relationship between the interest earned and the

(Revisited) amount deposited, as shown in Table 15.6.

To create a table that is similar to Table 15.6, we type the following commands.

>> format bank

>> Amount = 1000:250:3000;

>> Interest_Rate = 0.06:0.01:0.08;

>> Interest_Earned = (Amount')*(Interest_Rate);

>> fprintf('\n\n\t\t\t\t\t\t\t Interest

Rate');fprintf('\n\t Amount\t\t');...

fprintf('\t\t %g',Interest_Rate);fprintf('\n');

disp ([Amount',Interest_Earned])

Copyright 2010 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s).

圀圀圀⸀夀䄀娀䐀䄀一倀刀䔀匀匀⸀䌀伀䴀圀圀圀⸀夀䄀娀䐀䄀一倀刀䔀匀匀⸀䌀伀䴀