I need the answers for 2 or 3th questions done with MATLAB and need the codes. Thank you.

Problem set 4 /. Solve the linear system using Gauss'methed: 2x,-2 solve the equation x,-2x + 4-e, b y Newton's method (absolute error -o .00001). 3. Solve the Cauchy problem 2"-3yy(-2)-1.y(-2)--1 on the interval (-2.1), Plot the graphs of y(r) and (x). 4. Using secant merhod fin d the smallest positive number a such that I Jasin x + x, dx = \ ( absolute error -0.0001 ). 5. Solve the system using the method of simple iteration (initial approximation -15 6, r 0, absolute error 6 0.001)