Why won't my graph show?

%all of the variables except R0 are parameters I change
% The format for the list worked in a different plot
%not sure why it is not working now
clear;
clc;

T1=500;
T0=300;
R1=.10;
R0=(.1:.01:1);
h=100;
k=.05;

qoverL=(2*pi*(T1-T0))/((log(R0/R1)/k)+(1/h*R0));

plot(R0,qoverL);

xlabel('R0')
ylabel('q/L')
title('Heat lost vs R0')

Answer 1

[KSSV]

Read about element by element operations. You need to use ./ in the line which shows error.

%all of the variables except R0 are parameters I change
% The format for the list worked in a different plot
%not sure why it is not working now
clear;
clc;

T1=500;
T0=300;
R1=.10;
R0=(.1:.01:1);
h=100;
k=.05;

qoverL=(2*pi*(T1-T0))./((log(R0/R1)/k)+(1/h*R0));   % <----here use ./ as R0 is array

plot(R0,qoverL);

xlabel('R0')
ylabel('q/L')
title('Heat lost vs R0')