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# How can I plot ln(1-x)/x using colon operator?

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emma on 27 Feb 2021
Commented: emma on 27 Feb 2021
I am trying to plot f(x)=ln(1-x)/x for -10^(-15)<=x<=10^(-15) but when I run the program it says "Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 1-by-300." How can I alter my code so that it properly plots the function?
My code:
x = linspace(-10^(-15),10^(-15),300);
f = zeros(1,300);
for i = 1:300
f(:,i) = log((1-x(:,i))) ./ x;
end
f;
figure;
plot(x,f);
##### 2 CommentsShowHide 1 older comment
emma on 27 Feb 2021
Ah I was definitely overthinking the problem. Thank you for your timely help Kalyan!

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### Accepted Answer

Matt J on 27 Feb 2021
x = linspace(-10^(-15),10^(-15),300);
f = log(1-x)./x;
plot(x,f) ##### 1 CommentShowHide None
emma on 27 Feb 2021
Thank you for the easy fix, and for showing the graph!

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