Question: 3. Matrix (Extra credit: 25 points) Code Submission Filename: matrix.py Part A Define a Python function called matrix_multiply that takes two matrices and performs the

3. Matrix (Extra credit: 25 points) Code Submission Filename: matrix.py Part A Define a Python function called matrix_multiply that takes two matrices and performs the actual matrix multiplication operation (not element wise multiplication which you did in the last homework) using the dot_product function provided below. A matrix can be represented using a nested list where the inner lists form the rows of the matrix. You can assume that each matrix is square, that is, they have equal number of rows and columns and also assume that both matrices have the same size. However, the size can be any arbitrary positive integer n. |123| | 4 5 6 X |789| | 10 20 30 | | 40 50 60| | 70 80 90 | = | 300 360 420 | | 660 810 960 | | 1020 1260 1500 |

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