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clear;
a=1;b=2;
syms x;
f=@(x)a*x+b;
x=0.1:0.1:0.8;
f=eval(f);
plot(x,f)
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a=1;b=2;
syms x;
f=@(x)a*x+b;
x=0.1:0.1:0.8;
f=f(x); %eval(f);
plot(x,f)
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