fx-9860GII

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∑(

On a Casio calculator you can enter summation calculations

MATH			▷		∑(
	F4		F6		F2

or as

		CALC			▷		∑(
	OPTN		F4		F6		F3

or via the CATALOG as

 ∑( 

 

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Explanation

The syntax for using the sigma command is

∑ ( a_k, k, α, β, n)

where

ak	Expression
k	Variable used as index
α	Lower bound
β	Upper bound
n	Distance between partitions

 

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Example 1

 

 

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