Numerical Methods for Engineers and Scientists: An by Amos Gilat

By Amos Gilat

Following a special process, this cutting edge ebook integrates the educational of numerical tools with working towards machine programming and utilizing software program instruments in purposes. It covers the basics whereas emphasizing the main crucial tools in the course of the pages. Readers also are given the chance to reinforce their programming talents utilizing MATLAB to enforce algorithms. they are going to observe the way to use this device to resolve difficulties in technology and engineering.

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Additional resources for Numerical Methods for Engineers and Scientists: An Introduction with Applications Using MATLAB

Example text

Is defined and exists, Note that the order of multiplication is changed. • • • . For any matrix r [a], ([a] ) T For an invertible matrix If [a] then and [b] ([a][b])-1 = [a]. [a], ([ar1f 1 = [a] . are two square, invertible matrices of the same size. = [br1 [ar1. 5 Determinant of a Matrix The determinant that is defined for square matrices is a useful quantity that features prominently in finding the inverse of a matrix and provides useful information regarding whether or not solutions exist for a set of simultaneous equations.

Addition and subtraction of two matrices l�2-�lj ll; �J�l l�3 �1�J + - = Two matrices can be added or subtracted only if they are of the same size. The matrix [a] and the matrix [b] (both ( n x m ) ) are added (or subtracted) by adding (or subtracting) the corresponding elements of the two matrices. The result [c] is a matrix of the same size where: [ciJ] = Figure 2-11: Addition of matrices. for addition, as illustrated in Fig. 30) [a;)- [biJ] for subtraction. Transpose of a matrix The transpose operation of a matrix rearranges the matrix such that the 2 3 l2 3 � -2 -1 0 5 1 61 -4 7 9 T 5 6 7 - -1 _ 1- 01-49 rows are switched into columns (or vice versa, the columns are switched into rows) (Fig.

The result of the [b] . So, if matrix [a] is ( m x [c] is ( m x n ) (Fig. 2-13). 32) The elements of the matrix by columns of ment c11 umn of [b]. [c] are calculated by multiplying rows of Starting with the first row, the value of the ele­ is obtained by multiplying the first row of [b] q) and 2) . x l [a] [a] then the matrix example, as shown in Eq. 35) The multiplication procedure continues until the value of the element c32 is calculated. 36) A numerical example of multiplication is shown in Fig.

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