Question

Which Interval does the Intermediate Value Theorem guarantee that the polynomial x^4+7x^2-9x-1 has a root?
a)0, 1/2 b)1/2, 1 c)-1/2, 0 d)-1, -1/2

Answer 1

The intermediate value theorem guarantees an output between two given outputs. So what output corresponds to a root? What are two types of outputs which this root is between?