Casio fx-250HC User Manual page 28

kOrder of Operations and Levels
Operations are performed in the following order of prec-
edence.
1. Functions
2. x , x , R →P, P →R, nPr, nCr
y 1/y
3. ,
4. ,
• Operations with the same precedence are performed from
left to right, with operations enclosed in parentheses per-
formed first. If parentheses are nested, the operaitons en-
closed in the innermost set of parentheses are performed
first.
• Registers L
gisters, so calculations up to six levels can be stored.
• Each level can contain up to three open parentheses, so
parentheses can be nested up to 18 times.
• Example: The following operation uses 4 levels and 5
nested parentheses.
- O O O
2
The table below shows register contents following the
above input.
through L
1 6
+
3
store operations. There are six re-
- O O
4
— 26 —
+
5 4