what is the problem of my code it say when i run the code it show me Error in stop4 (line 17) semilogy(x,k)

a=0.0001;
l=0.003;
eo=8.85e-14;
er=11.9;
es=eo*er; 
q=1.6e-19;
f=550:1650;
p=1./power(2*pi*f,2);
c=p./1;
xd=(a*es)./c;
xd1=power(xd,1.5);
l1=power(1,0.5);
a1=power(a,0.5);
es1=power(es,0.5);
k=4*pi*xd1*q*l1*q*a1*2.2*power(10,5);
nd=es1./k;
semilogy(x,k)
xlabel('xd');
ylabel('nd');
hold on                                                     % <— ADD ‘hold’
plot(x,log10(k));

Answer 1

[Kidist Getu]

I also attached the program if ti helps

Answer 2

[Wayne King]

Hi, you should always format your code so people can read it easier. I have formatted it for you.

You do not provide us with the x variable in your code above so we cannot diagnose the problem.

You should also report the error message you are getting.

Answer 3

[Walter Roberson]

Your line

semilogy(x,k)

should be

semilogy(xd,k)

Your line

plot(x,log10(k));

should be

plot(xd,log10(k));