Casio SERIES FX-9860G - Manual (Page 107)

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.
K4(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.
AK4(CALC)6(g)3( Σ( )a,(K)
x-da,(K)+f,
a,(K),c,g,b)w
A4(MATH)6(g)2( Σ( )a,(K)
x-da,(K)+fe
a,(K)ecfgw
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.