Use the intermediate value theorem to show that the polynomial function has a real zero between the numbers given.
f(x)=4x²−2x−3; 1 and 2
What is f(1)?
What is f(2)?
Choose the correct statement below that explains why the given polynomial has a zero between 1 and​ 2, according to the intermediate value theorem.
A. Since​ f(1) and​ f(2) are opposite in​ sign, there exists at least one zero between 1 and 2.
or
B. Since​ f(2) is greater than​ f(1), the function is increasing and so there must be one real zero between 1 and 2.