7 σ calculations, Kexample σ calculation – Casio fx-9750G Differential/Quadratic Differential, Integration, Value User Manual
Page 15
77
3-7
Σ
Calculations
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 follow-
ing 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
K4
(CALC)
6
(
g
)
3
(
Σ
()
aKx-daK+f,
Input variable used by sequence {
a
k
}
aK,
Input the initial term of sequence {
a
k
} and last term of sequence {
a
k
}.
c,g,
Input
n
.
b)
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
6
Σ
(
k
2
– 3
k
+ 5)
k = 2