Graph of cylinder x^2 y^2=1 203048
Traces are useful in sketching cylindrical surfaces For a cylinder in three dimensions, though, only one set of traces is useful Notice, in Figure 280, that the trace of the graph of z = sin x z = sin x in the xzplane is useful in constructing the graphThe trace in the xyplane, though, is just a series of parallel lines, and the trace in the yzplane is simply one line