Casio CFX9850GBPLUS - Page 105

20070201
k Σ Calculations [OPTN] - [CALC] - [ Σ ]
To perform Σ calculations, fi rst display the function analysis menu, and then input the values
using the syntax below.
K 4 (CALC)6 (g )3 ( Σ ( )
a k , k , α , β , n )
(
n : distance between partitions)
Example To calculate the following:
Use
n = 1 as the distance between partitions.
A K 4 (CALC)6 (g )3 ( Σ ( )a , (K)
x -d a , (K)+f,
a , (K),c,g,b) w
<Math>
A4 (MATH)6 (g )2 ( Σ ( )a , (K)
x -d a , (K)+f e
a , (K)e c f g w
β
Σ
(
a
k
,
k
,
α
,
β
,
n
)
=
Σ
a
k
=
a
α
+
a
α
+1
+........+
a
β
k =
α
β
Σ
(
a
k
,
k
,
α
,
β
,
n
)
=
Σ
a
k
=
a
α
+
a
α
+1
+........+
a
β
k =
α
6
Σ
(
k
2
–3
k
+5)
k = 2
6
Σ
(
k
2
–3
k
+5)
k = 2
2-5-10
Numerical Calculations
# The value of the specifi ed variable changes
during a Σ calculation. Be sure to keep
separate written records of the specifi ed
variable values you might need later before
you perform the calculation.
# You can use only one variable in the function
for input sequence
a k .
# Input integers only for the initial term (
α ) of
sequence
a k and last term ( β ) of sequence a k .
# Input of
n and the closing parentheses can
be omitted. If you omit n , the calculator
automatically uses
n = 1.
# In the Math input mode, the distance between
partitions ( n ) is fi xed at 1 and cannot be
changed.