Publication date: 08/13/2020

The Summation() function adds the body results over all i values. The syntax is:

Summation( initialization, limitvalue, body );

For example:

s = Summation( i = 1, 10, i );

returns 55, the result of 1+2+3+4+5+6+7+8+9+10.

The script works like this:

s = |
Sets the s variable to the value of the function. |

Summation( |
Begins the Summation() loop. |

i = 1, |
Sets i to 1. |

10, |
Sets the limit of i to 10. |

i |
All values of i from 1 to 10 are added together, resulting in 55. |

); |
Ends the loop. |

This behavior is similar to Σ in the Formula Editor. The following expression:

Summation( i = 1, N Row(), x ^ 2 );

is equivalent to the following formula in the Formula Editor:

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