Plotting an equation with Matlab

Hi I will plot T(E)

where K2 is

h=1.36e-34

clc

clear all

m=1.6e-18;

U=5e-19;

E=10e-19:0.1:20e-19;

a=1e-9;

h=1.36e-34;

k=sqrt(2*m.*(E-U));

k2=k/h; c=(U^2)*(sin(0.5*a*k2).^2)./(4*E.*(E-U))

T=1./(1+c);

plot(E,T)

But I see an empty plot!

Can someone help me please ?

Answer 1

[TADA]

Your problem is the initialization of E you did:

E=10e-19:0.1:20e-19;

your interval is 17 orders of magnitude higher than the values, so you get a scalar instead of a vector

you should use an interval of the same order of magnitude or less

E=10e-19:0.1e-19:20e-19;