مسوري انا كمان كنت حابه اسألها على سؤال 6 .... لاني مو فاهمة هوا اصلا ايش يبغا نكتب مصفوفه ولا ايش ... ولا فاكرة ضرب المصفوفات ...ولا خلصنا المالتي اللي اظن انو يعتمد عليه و حيكون التسليم الاحد قبل المحاضره
نفسي افهم دا الشئ ايش يبغا بالزبط احد يفهمني ؟؟
كود:
coding exercise 6
matrix inverse
the inverse of a square matrix a is denoted a-1, such that a×a-1 = i, where i is the identity matrix with all 1’s on the diagonal and 0 on all other cells.
the inverse of matrix , for example, is
that is,
the inverse of a 3 × 3 matrix
can be obtained using the following formula if :
.
implement the following function to obtain an inverse of the matrix:
public static double[][] inverse(double[][] a)
write a test program that prompts the user to enter , , , , , , , , for a matrix and displays its inverse matrix. Here are the sample runs:
sample 1
enter a11, a12, a13, a21, a22, a23, a31, a32, a33: 1 2 1 2 3 1 4 5 3
-2 0.5 0.5
1 0.5 -0.5
1 -1.5 0.5
sample 2
enter a11, a12, a13, a21, a22, a23, a31, a32, a33: 1 4 2 2 5 8 2 1 8
2.0 -1.875 1.375
0.0 0.25 -0.25
-0.5 0.4375 -0.1875