Sharp el-9950 - Precedence of Calculations

45
Chapter 2: Operating the Graphing Calculator
Precedence of Calculations
When solving a mathematical expression, this calculator internally
looks for the following figures and methods (sorted in the order of
evaluation):
1) Fractions(1/4,a/b,
, etc.)
2) Complexangles(
∠
)
3) Singlecalculationfunctionswherethenumericalvalueoccurs
beforethefunction(X
2
,X
-1
,!,“°”,“
r
”,“
g
”,etc)
4) Exponential functions (a
b
,
a
, etc)
5) Multiplicationsbetweenavalueandastoredvariable/constant,
with “
×
”abbreviated(2
π
,2A,etc.)
6) 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,neg,etc.)
7) Multiplications between a number and a function in #6 (3cos20,
etc.“cos20”isevaluatedrst)
8) Permutationsandcombinations(nPr,nCr)
9)
×
,
÷
10 )
+
,
–
11 ) and
12 ) or, xor xnor
13 ) Equalitiesandnonequalities(<,
≤
, >,
≥
,
≠
, =,
→
deg,
→
dms, etc.)
Example
The key operation and calculation precedence
5 + 2 | s 30 + 25 | 5 a 3
E
1st
2nd
3rd
6th
5th
4th
• Ifparenthesesareused,parenthesizedcalculationshave
precedence over any other calculations.