Help needed plotting very simple equation

I want to plot:

y = x / (1+x^2)

Why does my output look like this? My code is within the screenshot as well.

Any help is greatly appreciated!

Answer 1

[Star Strider]

It looks like that because only part of the function is visible in that plot.

A ‘zoomed in’ part of the plot reveals it to be continuous with a minimum at (-1, -0.5) and a maximum at (+1, +0.5) so there is nothing at all wrong with it.

f = -500 : 0.1: 500;
Y = f ./ (1 + f.^2);

figure
plot(f, Y)
grid
xlim([-3 3])                            % X-Axes 'Zoomed' Around Origin

Experiment to explore it further.

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[Sidant Dev]

This is what I suspected, thank you!

[Star Strider]

As always, my pleasure!

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