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- Real Roots and Differentiation 5 answers
I've already used the Intermediate Value Theorem to show that there is at least one real root.
Using IVT to $N=0,$ there exists $c \in (-1,1)\;$ such that $\;f(c)=0.$
I can use Rolle's Theorem to show that there is at least $2$ real roots, but how do I show that the equation has at least three real roots?