Context Operator Table

The operators available to be used in student answers are controlled via the operators object of the current Context. See Answer Checkers and the Context or the Introduction to Contexts for details about how to alter the list of operators.

The operators and their precedences are listed below. Those shown in grey are not entered directly, but are generated automatically when the proper situation arises.

Operator	Precedence	Associativity	Description
,	0	left	Separates entries in points, vectors, lists, etc.
+	1	left	Addition
-	1	left	Subtraction
U	1.5	left	Forms unions of intervals and sets
><	2	left	Cross product of vectors (only in Vector and Matrix contexts)
.	2	left	Dot product of vectors (only in Vector and Matrix contexts)
*	3	left	Multiplication
/	3	left	Division
//	3	left	Division displayed horizontally
space	3	left	Multiplication (generated automatically by implied multiplication)
u+	6	left	Unary plus (generated automatically when + is used in unary position)
u-	6	left	Unary minus (generated automatically when - is used in unary position)
^	7	right	Exponentiation
**	7	right	Exponentiation
fn	7.5	left	Function call (generated automatically by functions)
!	8	right	Factorial
_	9	left	Element extraction (for vectors, matrices, lists, points)

In addition to these, there are some extra operators used to implement a non-standard precedence arrangement that is designed to allow things like sin 2x to be interpreted as sin(2) rather than as (sin(2)) x. In the standard precedence settings, these have the precedences or the corresponding operators listed above; in the non-standard precedence, they are as given below. Here, "space" represents an actual space.

Operator	Precedence	Associativity	Description
space*	2.8	left	Multiplication with preceding space
*space	2.8	left	Multiplication with trailing space
space/	2.8	left	Division with preceding space
/space	2.8	left	Division with trailing space
fn	2.9	left	Function call
space	3.1	left	Implied multiplication