# how to plot multiple 3d functions in one graph for x=0,z=0,x=2y,x+2y+z=2

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Faris Jalali on 12 Feb 2017
Commented: Faris Jalali on 13 Feb 2017
how to plot multiple 3d functions in one graph for x=0,z=0,x=2y,x+2y+z=2
Faris Jalali on 13 Feb 2017
i need to know the shape and coordinate of the tetrahedron formed by these planes

Seyedali Mirjalili on 12 Feb 2017
Generally speaking, Matlab overwrites a plot when you draw something. If you with to draw multiple things, try to freeze the plot first. The commands is:
hold on
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Faris Jalali on 13 Feb 2017
i am trying to calculate the volume .... Find the volume of the tetrahedron bounded by the planes x + 2y + z = 2, x = 2y, x = 0, and z = 0... i need to know the shape and coordinate of the tetrahedron formed by these planes

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