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66
3 - 6 Summation (Σ) Calculations
•You can use only one variable in the function for input sequence
ak.
•Input integers only for the initial term of sequence
ak and last term of sequence
ak .
•Input of n and the closing parentheses can be omitted. If you omit n, the
calculator automatically uses n = 1.
kk
kk
k Σ Calculation Applications
•Arithmetic operations using Σ calculation expressions
Expressions:
Possible operations: Sn + Tn, Sn – Tn, etc.
•Arithmetic and function operations using Σ calculation results
2 × Sn, log (Sn), etc.
• Function operations using Σ calculation terms (ak, 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.
nn
Sn =
Σ
ak, Tn =
Σ
bk
k = 1 k = 1
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