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Home Partial Differentiation Surfaces Sketching Surfaces (Examples)  
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Sketching Surfaces (Examples)
For sketching the graph of a function z = f(x, y), a topographic map, or contour map, can often be used as a first step. It is a method of representing a surface which is often found in atlases. In a topographic map, the curves f(x, y) = z_{0} are sketched in the (x, y) plane for several different constants z_{0}, and each curve is labeled (Figure 11.1.14). These curves are called level curves, or contours. Figure 11.1.14


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