• RootSum[f, form] represents the sum of form[x] for all x that satisfy the polynomial equation f[x] 0.
must be a Function
object such as (#^5 - 2 # + 1)&
• form need not correspond to a polynomial function.
objects into explicit sums involving Root
• 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.
• New in Version 3.