# VosejkSum

VosejkSum(Expression,jStart,jFinish,kStart,kFinish,jIncrement,kIncrement, NonVolatile)

Example model

This function calculates the following expression:

for a certain function f(j,k).

• Expression - the equation to be summed in string form, i.e. within " ", with the label # representing the integral variable

• jStart - the minimum value of j at which the summation is to begin

• jFinish - the maximum value of j at which the summation is to end

• kStart - the minimum value of k at which the summation is to begin

• kFinish - the maximum value of k at which the summation is to end

• jIncrement - optional parameter (default = 1) that allows one to specify that the summation is over non-integer increments of j.

• kIncrement - optional parameter (default = 1) that allows one to specify that the summation is over non-integer increments of k.

• NonVolatile - an optional recalculation mode parameter. If set to TRUE the function is evaluated only at the moment it is entered. If set to FALSE (default), the function is re-evaluated on each spreadsheet recalculation.