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Add RootSum to CHANGES & doc formatting #1149

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Oct 30, 2024
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Add RootSum to CHANGES & doc formatting #1149

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1 change: 1 addition & 0 deletions CHANGES.rst
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Expand Up @@ -30,6 +30,7 @@ By `@davidar <https://github.com/davidar>`_:
* ``PolyLog``
* ``PowersRepresentations``
* ``ReverseSort``
* ``RootSum``
* ``SeriesCoefficient``
* ``SquaresR``
* ``Subfactorial``
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4 changes: 2 additions & 2 deletions mathics/builtin/numbers/calculus.py
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Expand Up @@ -1704,7 +1704,7 @@ class RootSum(SympyFunction):

<dl>
<dt>'RootSum[$f$, $form$]'
<dd>sums $form[x]$ for all roots of the polynomial $f[x]$.
<dd>sums $form$[$x$] for all roots of the polynomial $f$[$x$].
</dl>

>> Integrate[1/(x^5 + 11 x + 1), {x, 1, 3}]
Expand All @@ -1718,7 +1718,7 @@ class RootSum(SympyFunction):
>> RootSum[#^5 - 3 # - 7 &, Sin] //N//Chop
= 0.292188

Use Normal to expand RootSum:
Use 'Normal' to expand 'RootSum':
>> RootSum[1+#+#^2+#^3+#^4 &, Log[x + #] &]
= RootSum[1 + #1 ^ 2 + #1 ^ 3 + #1 ^ 4 + #1&, Log[x + #1]&]
>> %//Normal
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