What's the problem with this simple anonymous function?

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Muhammad Usman
Muhammad Usman 2021-11-10
评论： Muhammad Usman 2021-12-7
Here's an simple code:
clear all; clc; close all;
n = 1:3;
for i = 1:numel(n) %numel is used if someother time I'll use negative values for n
f = @(x) x.^n;
fplot(f);
hold on;
f1 = @(x) x.^(1/n);
fplot(f1);
hold on;
end
The function "f" is running OK but "f1" is generating graphics error. For one value of n like:
f1 = @(x) x.^(1/2);
It generates the plot, but not in the loop.
Please let me know what's wrong?

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采纳的回答

Steven Lord
Steven Lord 2021-11-10
Ran in:
You likely meant to use n(i) in your functions, not n. Another option would be to use 1./n instead of 1/n.
n = 1:3
n = 1×3
1 2 3
y = 1./n
y = 1×3
1.0000 0.5000 0.3333
z = 1/n(2)
z = 0.5000
w = 1/n
Error using /
Matrix dimensions must agree.
  2 个评论
Muhammad Usman
Muhammad Usman 2021-12-7
One thing more to ask how to adjust legend for array n
n = 1:10;
figure(1);
f = @(x) x.^n;
fplot(f);
hold on;
legend(sprintf('$x^{%d}$\n',n),'Interpreter','latex');
xlim([0 10])
The output I got:
How to correct it?
Thanks in advance

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