hwtue.mws
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with(LinearAlgebra):
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A:=Matrix([[2,-x,2],[1,1,x],[-2,1,-2]]);
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d:=Determinant(A);
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solve(d=0,x);
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A:=Matrix([[t,1],[0,t]]);
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MatrixExponential(A);
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A:=Matrix([[2*t,t],[0,2*t]]);
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MatrixExponential(A);
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