Casio fx-9750G PLUS - Manual (Page 93)

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 K4 (CALC)6(g)3( Σ()aKx-daK+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