what is my mistake?

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MA
MA on 14 Jun 2014
Answered: Azzi Abdelmalek on 14 Jun 2014
syms x
A=[x 2 1;1 0 -x;5 1 x];
x=-15:.1:15;
plot(x,det(A))
grid on

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Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 14 Jun 2014
syms x
A=[x 2 1;1 0 -x;5 1 x];
x=-15:.1:15;
plot(x,subs(det(A),x))
grid on

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