Practical - 4 IWD
AIM : Write a script to perform 3x3 matrix Multiplication. 3×3 Matrix Multiplication using PHP 📌 Theory (For Exam) Matrix multiplication is possible only if Number of columns of Matrix A = Number of rows of Matrix B For 3×3 matrices , the result is also a 3×3 matrix Formula used: C [ i ] [ j ] = ∑ k = 0 2 A [ i ] [ k ] × B [ k ] [ j ] C[i][j] = \sum_{k=0}^{2} A[i][k] \times B[k][j] C [ i ] [ j ] = k = 0 ∑ 2 A [ i ] [ k ] × B [ k ] [ j ] ✅ PHP Script for 3×3 Matrix Multiplication <?php // Define first 3x3 matrix $A = array ( array ( 1 , 2 , 3 ), array ( 4 , 5 , 6 ), array ( 7 , 8 , 9 ) ); // Define second 3x3 matrix $B = array ( array ( 9 , 8 , 7 ), array ( 6 , 5 , 4 ), array ( 3 , 2 , 1 ) ); // Initialize result matrix with zeros $result = array ( array ( 0 , 0 , 0 ), array ( 0 , 0 , 0 ), array ( 0 , 0 , 0 ) ); // Matrix multiplication logic for ( $i = 0 ; $i < 3 ; $i ++) { for ( $j = 0 ; $j ...