LINEAR EQUATIONS

Creating a Matrix Substituting Within a Symbolic Matrix Manipulating Regular Matrices Vectors Scalar Multiplication Addition of Matrices Gauss-Jordan Elimination Reduced Row-Echelon Form Dot Product Rank Number of Solutions

Creating a Matrix How to Examples Exercise How to: Creating a matrix , say Matrix A, within MATLAB is really quite simple, just type:      A = [First row entries; Second row entries; etc.] Or for a symbolic matrix (one that has any number of variable names as entries), type:      A = sym('[First, row, entries; Second, row, entires; etc.]') Examples: So, if you wanted to create a matrix that was 3x3 with all of its entries being the number 13:      R = [13 13 13; 13 13 13; 13 13 13] Or if you wanted to create a symbolic 2x4 matrix that went through the letters starting with 'a' you would type:      S = sym('[a, b, c, d; e, f, g, h]')      (note: in symbolic matrices commas are used to separate entries, unlike regular matrices) Exercise: Create a 4x4 matrix that counts from 1 through 16, row by row. Click here to see the answer.