use command window scwiQuestion $3$

As an experienced engineer, you are tasked to demonstrate an electromagnetic

wave using the $3$D tools available in Octave software. The equation that defines the

electromagnetic wave is shown below:

$z=sin(x^2-y^2)$

Using the above equation, plot a $3$D meshgrid with $2$ linearly spaced data points from

$-2$ to $2.$ Your plotted $3$D diagram should display the title "Electromagnetic Waves" and

your axis should be labelled with $"x","y"$ and $"z"$ characters.