how to do smoothen this graph
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this is my coding.
f=5000;
C=[2.000 1.000 0.665 0.500 0.400];
Xc=[15 30 48 58 76];
%% a
data=C*10^-6*f
eq=1./data
%% b
figure
subplot(4,4,[(1,2);(5,6)])
p=polyfit(C,Xc,2)
f=polyval(p,C);
f2=p(1)*C.^2+p(2)*C+p(3)
plot(C,Xc,'o',C,f,'--')
axis([0 2 10 80]);
legend('Experiment Data','Polynomial Fitting', 'Location','northeast')
xlabel('C(\muF)')
ylabel('XC(\Omega)')
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Walter Roberson
am 26 Jan. 2021
f=5000;
C=[2.000 1.000 0.665 0.500 0.400];
Xc=[15 30 48 58 76];
%% a
data=C*10^-6*f
eq=1./data
%% b
figure
subplot(4,4,[1,2;5,6])
p=polyfit(C,Xc,2)
Cinterp = linspace(min(C),max(C));
f = polyval(p, Cinterp);
f2=p(1)*C.^2+p(2)*C+p(3)
plot(C, Xc, 'o', Cinterp, f, '--')
axis([0 2 10 80]);
legend('Experiment Data','Polynomial Fitting', 'Location','northeast')
xlabel('C(\muF)')
ylabel('XC(\Omega)')
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