166
Appendix
Example
The key operation and calculation precedence
5
+
2
|
s
30
+
25
|
5
a
3
E
1st
2nd
3rd
6th
5th
4th
4. Precedence of Calculations
When solving a mathematical expression, this calculator inter-
nally looks for the following figures and methods (sorted in the
order of evaluation):
1) Fractions (1/4, a/b, , etc.)
2) Single calculation functions where the numerical value occurs
before the function (X
2
, X
-
1
, !, “ ° ”, “
r
”, and “
g
”)
3) Exponential functions (a
b
,
a
, etc)
4) Multiplications between a value and a stored variable/con-
stant, with “
×
” abbreviated (2
π
, 2A, etc.)
5) Single calculation functions where the numerical value occurs
after the function (sin, cos, tan, sin
-
1
, cos
-
1
, tan
-
1
, log, 10
x
, ln,
e
x
,
, abs, int, ipart, fpart, (
–
), not, etc.)
6) Multiplications between a number and a function in #5
(3cos20, etc. “cos20” is evaluated first)
7) Permutations and combinations (nPr, nCr)
8)
×
,
÷
9)
+
,
–
10) and
11) or, xor, xnor
12) Equalities and inequalities (<,
≤
, >,
≥
,
≠
, =,
→
deg,
→
dms, etc.)
• If parentheses are used, parenthesized calculations have
precedence over any other calculations.
