Graph of a function
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https://term.museum-digital.de/md-de/tag/54482
- Note
- In the case of functions of two variables, that is functions whose domain consists of pairs ( x , y ) , {\displaystyle (x,y),} the graph usually refers to the set of ordered triples ( x , y , z ) {\displaystyle (x,y,z)} where f ( x , y ) = z , {\displaystyle f(x,y)=z,} instead of the pairs ( ( x , y ) , z ) {\displaystyle ((x,y),z)} as in the definition above. This set is a subset of three-dimensional space; for a continuous real-valued function of two real variables, it is a surface.
In science, engineering, technology, finance, and other areas, graphs are tools used for many purposes. In the simplest case one variable is plotted as a function of another, typically using rectangular axes; see Plot (graphics) for details.
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