31 lines
539 B
Matlab
31 lines
539 B
Matlab
clc
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syms l
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X = [1/(3+l); (-1)/(1-l); (-1)/(2-l)]
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a1 = (3+l)^2;
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a2 = (1-l)^2;
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a3 = (2-l)^2;
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t1 = a2*a3
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t2 = a1*a3
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t3 = a1*a2
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t4 = a1*a2*a3
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c1 = (coeffs(t1, 'All'))
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c2 = (coeffs(t2, 'All'))
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c3 = (coeffs(t3, 'All'))
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c4 = (coeffs(t4, 'All'))
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ctot = coeffs(t1+t2+t3-t4, 'All')
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sol = double(solve(t1+t2+t3-t4==0, l, 'Real', true))
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for i=1:size(sol, 1)
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Xi = double(subs(X,l,sol(i)))
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Li = sol(i);
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Ci = norm(Xi, 2)^2 - 1;
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Yi = sum(Xi .* Xi .* [-3;1;2]) + sum(2 * Xi);
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fprintf("lambda=%.03f ci=%g y=%g", Li, Ci, Yi);
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end
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