when a change number of points in linspace graph changing, why it is happening?(when i changing d graph is also changing)

d=100; f=linspace(3e14,5e14,d);

 %n=20;

[m11_a,m12_a,m21_a,m22_a] = layer_a(f);

[m11_b,m12_b,m21_b,m22_b] = layer_b(f);

[m11_n,m12_n,m21_n,m22_n]= Nemativ_liquid_crystal(f);

[m11,m12,m21,m22]=multiplication(m11_a,m12_a,m21_a,m22_a,m11_b,m12_b,m21_b,m22_b);

for r=1:5

   [m11,m12,m21,m22] = ab_multiplication(m11,m12,m21,m22);

end

[m11_,m12_,m21_,m22_]=multiplication(m11_b,m12_b,m21_b,m22_b,m11_a,m12_a,m21_a,m22_a);

for m=1:5

[m11_,m12_,m21_,m22_] = ab_multiplication(m11_,m12_,m21_,m22_);

end

[m11,m12,m21,m22]=multiplication(m11,m12,m21,m22,m11_n,m12_n,m21_n,m22_n); [m11,m12,m21,m22]=multiplication(m11,m12,m21,m22,m11_,m12_,m21_,m22_);

    for n=1:d
t(n)=2./((m11(n)+m22(n))+((1i).*(m12(n)-m21(n))));
end

plot(f,abs(t))