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Resolution of plot code errors

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영석
영석 2023-12-1
评论： Voss 2023-12-1
syms x;
y=1/sqrt((1-x^2)^2+(2*x)^2);
plot(x,y);
xlim([0 5]); ylim([0 4]);
I can't draw a graph. A code error appears
I need your help

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采纳的回答

Les Beckham
Les Beckham 2023-12-1
Ran in:
Why are you trying to do this with symbolic variables? It works using simple numeric variables.
x = linspace(-5, 5, 500);
y = 1 ./ sqrt((1-x.^2).^2 + (2*x).^2); % <<< use element-wise powers and division
plot(x, y);
% xlim([0 5])
ylim([0 4])
grid on

更多回答（1 个）

Voss
Voss 2023-12-1
Ran in:
Use fplot instead of plot:
syms x;
y=1/sqrt((1-x^2)^2+(2*x)^2);
fplot(x,y);
xlim([0 5]); ylim([0 4]);
  2 个评论
영석
영석 2023-12-1
That's what I wanted. thank you:)
Voss
Voss 2023-12-1
You're welcome! If this answer helped, please vote for and/or Accept it. Thanks!

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