Manuals/calci/SERIESSUM

SERIESSUM (x,n,m,coefficients)

$x$ is the power series value.
$n$ is the initial power value.
$m$ is the step value to increase the n value for each term.
is the set of coefficients by which each successive power of x is multiplied.
- SERIESSUM(), returns the sum of a power series based on the formula

Description

This function gives the value of the seriessum of the given set of values.
Seriessum is defined by the following formula : $SERIESSUM(x,n,m,a)=a_{1}x^{n}+a_{2}x^{(n+m)}+a_{3}x^{(n+2m)}+...+a_{j}x^{(n+(j-1)m)}$ .
Here $x$ is the power-series value, $n$ is the starting power value, $m$ is the increasing value of a power and $a$ is the set of coefficients.
According to the number of coefficients, the number of terms of the power series also get varies.
For example there 5 values in coefficients, then 5 terms will be there in power series.

   This function will give the result as error when any one of the argument is non-numeric.

=SERIESSUM(3,2,2,[1,2,3,4,5,6]) = 3512493
=SERIESSUM(1,0,4,[1,2,3]) = 6
=SERIESSUM(2,1,5,[2,4,6,8]) = 536836
=SERIESSUM(0,2,4,[1,2,3,4,5]) = 0
=SERIESSUM(1,0,3,[1,2,3,4,5]) = 15
=SERIESSUM(1,1,5,[1]) = 1