How to add/overlay curves on an existing plot that was done by a surf() function? I have tried doing that before, but some of the curves are totally lost in the blue colors of my surf()plot.
I read somewhere that I could use "plot3()" BEFORE using surf(), however, my plots are in 2-D (I am using view(2), because I just want to obtain the Feasible region), and I am not quite sure how to use plot3() in this case. Any idea?
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