How do I typeset functions, such as max, det, that Math does not know about?

How do I typeset functions, such as max, det, that Math does not know about?

Math has a number of standard functions built-in, such as cos, log etc.

These functions are typeset in an upright shape according to typographical traditions.

To typeset other functions this way you can simply preceed the function with func. Example:

• To typeset max(a,b) you should enter func max(a,b).