represents the sum of for all x that satisfy the polynomial equation .
- f must be a Function object such as .
- form need not correspond to a polynomial function.
- Normal[expr] expands RootSum objects into explicit sums involving Root objects.
- f and form can contain symbolic parameters.
- RootSum[f, form] is automatically simplified whenever form is a rational function.
- RootSum is often generated in computing integrals of rational functions.
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