For the function f (x) = x^2 - 2 And using the MATLAB fzero function and format long a) Find the positive root using the open method form, and b) Find the positive root using the bracketing form. 4) For the linear, constant coefficient homogeneous differential equation: d^5 y/dx^5 - 7 d^3y/dx^3 - 12 dy/dx = 0 Find the characteristic equation and use the MATLAB roots function to obtain the roots of the characteristic equation and write out the general solution of the differential equation