For loop not showing plot?

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hag12899
hag12899 2020-9-26
回答： David Hill 2020-9-26
I'm looking for some guidance:
This is intended to be a for loop to show the values of 1-50 for the inverse of mathematical e (e) with a plot showing the numbers 1-50 on the x-axis and the error on the y-axis. Using this code, I am getting the correct output of numbers in the command window but the plot that shows up lacks a line or any kind of data. Am I missing something in my code?
clear;
counter=1;
for n=1:50
error=(1-1./n).^n
end
% plot of error vs n
plot(n,error)
grid on;
title('error vs. n');
xlabel('n');
ylabel('error');

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回答（1 个）

David Hill
David Hill 2020-9-26
I answered your previous question also. This is the same answer. No loop is needed. Your override error on each loop to a single value.
n=1:50;
error=(1-1./n).^n;
plot(n,error);
grid on;
title('error vs. n');
xlabel('n');
ylabel('error');

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