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## Main Question or Discussion Point

i am learning MATLAB, but have not yet learned anything do do with graphing, but need a program that can plot x.y.z graphs for my calculus work,

can someone please help me plot 3d graphs on MATLAB, for example

z=x

how can i input x,y,z so that MATLAB will give me the surface graph of this function

can someone please help me plot 3d graphs on MATLAB, for example

z=x

^{2}+2x+y^{2}-yhow can i input x,y,z so that MATLAB will give me the surface graph of this function