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m_chap2_ex2_2.m

j=1; h=0.02; a=[1;2;1]; b=[-sqrt(3);0;sqrt(3)]; c=[sqrt(2);-sqrt(2);sqrt(2)]; for t=0:h:50 x=-0.088*a*(1/1)*sin(3*t)-2.63*b*(1/1)*sin(3*t)+0.21*c*(1/1)*sin(3*t); u1(j)=x(1);

ode_example2_2b_2.m

%MATLAB Program2_2b %ode_example2_2b.m function sx=ode_example2_2b_2(t,x) sx(1,1)=x(2); sx(2,1)=x(3)+1; sx(3,1)=-2*x(1)-4*x(2)-3*x(3)+1;

m_chap2_ex2_2.m

j=1; h=0.02; a=[1;2;1]; b=[-sqrt(3);0;sqrt(3)]; c=[sqrt(2);-sqrt(2);sqrt(2)]; for t=0:h:50 x=-0.088*a*(1/1)*sin(3*t)-2.63*b*(1/1)*sin(3*t)+0.21*c*(1/1)*sin(3*t); u1(j)=x(1);