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Experimental method: including the Gauss iteration and Newton descent method 1, with the Gauss- Seidel iterative method for solving equations 10x1-x2-2x3 = 7.2 -x1+10 x2-2x3 = 8.3 -x1-x2 = 5x3 Enter: the coefficient matrix A, the maximum number of iterations N, the initial vector, the error limit e Output: solution vector 2, Solving equations with the Newton descent x* x* xx* x-1 = 0 (initial value 0.6) input: initial value, the error limit, the maximum number of iterations, down the maximum number of output: approximate root of the step down factor.