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https://issues.apache.org/jira/browse/MATH-683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13119267#comment-13119267
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DI COSTANZO commented on MATH-683:
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No. I don't want to modify the "value" method. I just want to add a new "shift"
method transforming the current polynomial defined as an array of coeffcient in
increasing 'x' power, by a new polynomial where 'x' is replaced by 'x+a', a
beeing a double value. The signature could be something like this :
PolynomialFunction shift(final double shift){
}
So, if the initial polynomial is given by :
P1 = sum(ai * x^i) (i = 0...n)
The new polynomial created by the "shift" method will be :
P2 = sum(ai * (x + a)^i) (i = 0...n)
> Create a method shift in the PolynomialFunction class
> -----------------------------------------------------
>
> Key: MATH-683
> URL: https://issues.apache.org/jira/browse/MATH-683
> Project: Commons Math
> Issue Type: New Feature
> Affects Versions: 3.0
> Environment: All
> Reporter: DI COSTANZO
> Priority: Trivial
>
> Create a method shift to transform a polynomial P(k) in P(k + a) where a is
> any double value.
> The polynomial sum(ai * k^i) turns into sum(ai * (k+a)^i)
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