Graph not being displayed

I wrote a very simple code:

x=linspace(-5,5,130);

y=((2.*x.^2)-(2.*x)-1)/((x.^4)+1);

plot(x,y);

This code doesnt display the graph, the coordinate plane is just empty. I cant figure out whats wrong with it.

Answer 1

[Torsten]

./ instead of simple / :

x=linspace(-5,5,130);
y=(2*x.^2-2*x-1)./(x.^4+1);
plot(x,y);

[Ali Ahmed]

Yes It worked, Thank You!

Answer 2

[the cyclist]

You missed a place where you need an element-wise operation. Try

x=linspace(-5,5,130);
y=((2.*x.^2)-(2.*x)-1)./((x.^4)+1); % You did not have ./, so y was not what you expected
plot(x,y);