Please solve these 2 problems by using Matlab and share the code. If it is possible please give explanation

Given linear system AX=B where A=71381914231481482427,B=7268 and X=x1x2x3x4. Perform 11 iterations of method of simple iteration using the initial approximation X(0)=(0000)T. Use the optimal value of the parameter in the calculations. Solve the system using Matlab command linsolve (let us denote by Xs the solution that is obtained with the linsolve command). Find the norm XSX(11)2 after 11 iterations. Round the answer to 4 decimal places after the decimal point. Answer. Using Newton's method find the approximate solution of the equation sin3x=4x3 after 2 iterations. The initial approximation is x0=10. Round the answer to 4 decimal places after the decimal point