MATLAB: Plotting an Anonymous Function

Question

I have created an anonymous function

sqr = @(x) x.^2;

and I am trying different methods for plotting this function, and none seem to plot the function correctly (aside from ezplot) I have tried

figure
plot(sqr(-5:5))
figure
fplot(sqr(-5:5))

Using plot(), it creates a correct looking plot but my axes are not correct, it displays the function from 1 to 11, centered at 6. (so the range is correct)

using fplot() it creates horizontal lines from x = -5:5 at y = 0, 2, 4, 9, 16, 25

Is this what is supposed to happen and I just don't fully understand the functions yet? Or have I set my function up incorrectly?

Thanks.

Answer 1

You need to explicitly give plot the "x" information, not just the "y" information. E.g.,

x = -5:5;
plot(x,sqr(x))