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{PARA 0 "" 0 "" {TEXT -1 43 "plot3d will plot z=f(x,y) for f(x,y) give
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65 "plot3d(x^2-y^2,x=-1..1,y=-1..1, scaling=constrained, axes=boxed);
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( x^3 + y^3 + z^3 + 1 = (x + y + z + 1)^3,x=-2..2,y=-2..2,\nz=-2..2,gr
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{PARA 0 "" 0 "" {TEXT -1 29 "Intersection of two surfaces." }}}{PARA 
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Hyperboloid of one sheet" }}}{EXCHG {PARA 0 "> " 0 "" {MPLTEXT 1 0 
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