Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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65
6
Σ
(
k
2 – 3
k
+ 5)
k = 2
3-6 Summation (
Σ
) Calculations
[OPTN]
-
[CALC]
-
[
Σ
(]
To perform
Σ
calculations, first display the function analysis menu, and then input
the values shown in the formula below.
6
(
g
)
3
(
Σ
()
a
k
,
k
,
α
,
β
,
n
)
Σ
calculation is the calculation of the partial sum of sequence
a
k
, using the
following formula.
k k
k k k
Example
Σ
Calculation
Example To calculate the following:
Use
n
=
1
as the distance between partitions.
Input sequence
a
k
.
A K 4
(CALC)
6
(
g
)
3
(
Σ
()
a K x -d a K+f,
Input variable used by sequence
a
k
.
a K,
Input the initial term of sequence
a
k
and last term of sequence
a
k
.
c,g,
Input
n
.
b)
w
Distance between partitions
Last term of sequence
a
k
Initial term of sequence
a
k
Variable used by sequence
a
k
β
Σ
(
a
k
, k ,
α
,
β
, n )
⇒
Σ
a
k
k =
α
β
S =
a
α
+
a
α
+1
+........+
a
β
=
Σ
a
k
k =
α