Write a MatLab code that…
a. Make a 3-D surface plot of the functions 
and 
in the same plot (inthe domain –6≤x≤6 and–6≤y≤6). You might need to change the view ofthe plot to see the 3D version of it.
b. As you can see, there are parts that the value for z1 isbigger than z2 and parts that z2 value is greater than z1. I wantyou to break the current plot into two separate plots. One plot(figure 2), shows the surface plot of z1 and z2 only for the x andy such that z1
OR
OR