The result, 6, then becomes the exponent of 4 to yield 4096. For example, in the expression 4^3!, 3! is evaluated first. Arguments followed by a post operator are evaluated at the fourth priority level. Post operators are operators that come directly after an argument, such as 5!, 25%, or 60 ☁5' 45". For example, if 10 →r and “r” →s1, then #s1=10. Indirection also allows the creation and modification of variables from inside a program. For example, #(“x”&”y”&”z”) creates the variable name xyz. ![]() The indirection operator (#) converts a string to a variable or function name. To multiply the expression b+c by the variable a, use explicit multiplication: a For example a(b+c) is the function a evaluated by b+c. Note: Because the TI‑Nspire™ software allows you to define your own functions, a variable name followed by an expression in parentheses is considered a “function call” instead of implied multiplication. For example, (1+2)/(3+4 will display the error message “Missing ).” If not, an error message is displayed that indicates the missing element. The number of opening and closing parentheses, brackets, and braces must be the same within an expression or equation. For example, in the expression 4(1+2), EOS™ software first evaluates the portion of the expression inside the parentheses, 1+2, and then multiplies the result, 3, by 4. ![]() Less than (), greater than or equal ( ≥ or >=)Īll calculations inside a pair of parentheses, brackets, or braces are evaluated first. Post operators: degrees-minutes-seconds ( °,',"), factorial (!), percentage (%), radian ( r), subscript (), transpose ( T)Įquality relations: equal (=), not equal ( ≠ or /=), EOS™ software evaluates expressions and equations using parenthetical grouping and according to the priorities described below. Numbers, variables, and functions are entered in a simple, straightforward sequence. This section describes the Equation Operating System (EOS™) that is used by the TI‑Nspire™ math and science learning technology. EOS™ (Equation Operating System) Hierarchy
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