Casio fx-9750G PLUS - Manual (Page 94)

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Summation ( Σ) Calculations
• You can use only one variable in the function for input sequence a
k
.
• Input integers only for the initial term of sequence a
k
and last term of sequence
a
k
.
• Input of n and the closing parentheses can be omitted. If you omit n , the
calculator automatically uses n = 1.
k k k k k
Σ Calculation Applications
• Arithmetic operations using Σ calculation expressions
Expressions:
Possible operations: S
n
+ T
n
, S
n
– T
n
, etc.
• Arithmetic and function operations using Σ calculation results
2 × S
n
, log (S
n
), etc.
• Function operations using Σ calculation terms (a
k
, k)
Σ (sink, k, 1, 5), etc.
• Note that you cannot use a Solve, differential, quadratic differential,
integration, maximum/minimum value or Σ calculation expression inside of a Σ
calculation term.
• Make sure that the value used as the final term β is greater than the value
used as the initial term α. Otherwise, an error will occur.
• To interrupt an ongoing Σ calculation (indicated when the cursor is not on the
display), press the A key.
n n
S
n
=
Σ
a
k
, T
n
=
Σ
b
k
k = 1 k = 1