Practice question · Multiple choice
A weather map draws isobars: curves of equal pressure. In the language of multivariable calculus, what is an isobar?
Hints
- An isobar collects all the map points sharing one particular pressure value.
- The set has a standard name.
Show the answer
A. A level curve of
Why
Isobars, contour lines on hiking maps, and isotherms are all level curves: slices of a two-variable function at constant height. Where they crowd together, the function changes fast, the wind blows hardest where isobars are packed tight.
Practise Functions of Several Variables
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