Forward elimination, MATLAB in Engineering

Assignment Help:

Forward elimination:

In forward elimination, we want to obtain a 0 in the a21 position. To accomplish this, we can alter the second line in the matrix by subtracting from it 2 * the first row.

In this way we would write this ERO as:

643_Forward elimination.png

Now, placing it back in the matrix equation form:

1185_Forward elimination1.png

It says that the second equation is now -2x2 = 2 therefore x2 = -1. Now put it into the first equation:

x1 +  2(-1) = 2, and hence  x1 = 4.

This is known as the back-substitution.


Related Discussions:- Forward elimination

Illustration of sorting strings, Illustration of Sorting strings: To s...

Illustration of Sorting strings: To sort on the rows rather than second dimension should be specified. >> sort(words,2) ans = Hello Hdowy Hi Gbdeo

Gauss elimination, Gauss Elimination: The Gauss elimination technique ...

Gauss Elimination: The Gauss elimination technique consists of:    Generating the augmented matrix [A b]    Applying EROs to augmented matrix to obtain an upper trian

Dot product of matrix, Dot Product: The dot or inner product of two ve...

Dot Product: The dot or inner product of two vectors a and b is written as a • b and is defined as  In another words, this is like matrix multiplication when multiplyi

Program to examine exponential function, Write a program to examine exponen...

Write a program to examine exponential function: We will write a program to examine the value of e and the exponential function. It will be a menu-driven. The menu options wil

Illustration of matrix solutions, Illustration of Matrix solutions: Fo...

Illustration of Matrix solutions: For illustration, consider the three equations below with 3unknowns x 1 ,x 2 , and x 3 : We can write this in the form Ax = b here A

Replacing, Replacing, Finding, and separating strings: There are numer...

Replacing, Finding, and separating strings: There are numerous functions which find and replace the strings, or parts of strings, within the other strings and functions which

Readlenwid function - subfunctions, readlenwid function: function cal...

readlenwid function: function call: [length, width] = readlenwid; function header: function [l,w] = readlenwid In the function call, not any argument is passed; henc

Related structure functions, Related Structure Functions: There are ma...

Related Structure Functions: There are many functions which can be used with structures in a MATLAB. The function isstruct will return 1 for logical true when the variable arg

Illustration of gauss-jordan elimination, Illustration of gauss-jordan elim...

Illustration of gauss-jordan elimination: An illustration of interchanging rows would be r1 ¬→ r3, that would results: Now, beginning with this matrix, an illustration of sc

Forward substitution, Forward substitution: The Forward substitution (...

Forward substitution: The Forward substitution (done methodically by first getting a 0 in the a 21 place, and then a 31 , and lastly a 32 ): For the Gauss technique,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd