How could I plot y=(x-2)/(2x+3)?

So far I've got:

x = [-100 : 1 : 100];

y = (x - 2) / (2*x + 3);

plot(x,y, 'r')

grid on, axis equal

When I run it, it brings up the plot but the graph is missing.

Answer 1

[Star Strider]

You forgot the dot (.) operator to do element-wise division:

y = (x - 2) ./ (2*x + 3);
            ↑ ← DOT GOES HERE!

See Array vs. Matrix Operations for details.

Answer 2

[Richard Kadar-Nemeth]

Oh yes, the dot. I was playing with it but left a space between the dot and the / operator. Thanks for the quick help.

[Star Strider]

My pleasure.

Leaving a space between the dot and the operator will throw an ‘Unexpected MATLAB operator.’ error.

Answer 3

[Bhargav k]

Plot the graph of y = x^2 − 2x − 3.