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66
3 - 6 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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