Solve in Matlab, please and provide code

Problem (4): Write a user-defined MATLAB function that calculates the determinant of a 3x3 matrix by using the formula: A21 A2 3A31 A32 :121 123 det = A 111A, A33 12A31 A33 For the function name and arguments, use d3 - det3by3(A), where the input argument A is the matrix and the output argument d3 is the value of the determinant. Write the code of det3by3 such that it has a sub-function that calculates the 2x2 determinant. Use det3by3 for calculating the determinants of: 2.5 71 (a)6 5 4 (b)5-3 -2.6 Problem (4): Write a user-defined MATLAB function that calculates the determinant of a 3x3 matrix by using the formula: A21 A2 3A31 A32 :121 123 det = A 111A, A33 12A31 A33 For the function name and arguments, use d3 - det3by3(A), where the input argument A is the matrix and the output argument d3 is the value of the determinant. Write the code of det3by3 such that it has a sub-function that calculates the 2x2 determinant. Use det3by3 for calculating the determinants of: 2.5 71 (a)6 5 4 (b)5-3 -2.6