what is my mistake?
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syms x
A=[x 2 1;1 0 -x;5 1 x];
x=-15:.1:15;
plot(x,det(A))
grid on
Accepted Answer
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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