Advanced Engineering Mathematics using MATLAB by Harman, Dabney, Richert,书中全部源码
源代码在线查看： ex5_5.m
% EX5_5.M Find roots of equations in Example 5.5 fprintf('Check results of Example 5.5 \n') p=[1 3 3 1 0 0] r=roots(p) p1=[1 2 5] r1=roots(p1) % fprintf('Strike a key for symbolic solutions \n') pause % Try symbolic solutions % % Solve lam^2 +b*lam +c =0 % lam=solve('l^2+b*l+c=0','l') % % Solve 5th order roots5=solve('z^5+3*z^4+3*z^3+z^2=0') % yroot='y^2+2*y+5' roots2=solve(yroot,'y') % % Add a few more displayed statements to explain results % % Try fifth order one p5=[1 10 5 5 10 1] r5=roots(p5)
