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CASIO

User´s Guide

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Σ Calculations

Function that, for a specified range of f(x), determines sum

(f(x)) = f(a) + f(a + 1) + f(a + 2) + ⋯ + f(b).

Natural Display input syntax is (f(x)), while Linear Display input syntax is ∑(f(x), a, b).

a and b are integers that can be specified within the range of -1 × 1010 < a ≦ b < 1 × 1010.


Example: (x + 1) = 20

(MthIO-MathO)

  • ()(X)115
  • 20

(LineIO)

  • ()(X)1(,) 1(,) 5
  • 20

Note

The following cannot be used in f(x): Pol, Rec, ÷R. The following cannot be used in f(x), a, or b: ∫, d/dx, Σ, Π.

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