Here are the essential concepts you must grasp in order to answer the question correctly.
Intermediate Value Theorem
The Intermediate Value Theorem states that if a function is continuous on a closed interval [a, b] and takes on different signs at the endpoints, then there exists at least one c in (a, b) such that f(c) = 0. This theorem is crucial for proving the existence of real zeros in polynomial functions.
Recommended video:
Introduction to Hyperbolas
Polynomial Functions
A polynomial function is a mathematical expression involving a sum of powers in one or more variables multiplied by coefficients. In this case, f(x) = 3x^3 - 8x^2 + x + 2 is a cubic polynomial, which is continuous and differentiable everywhere, making it suitable for applying the Intermediate Value Theorem.
Recommended video:
Introduction to Polynomial Functions
Sign Change
A sign change occurs when the value of a function changes from positive to negative or vice versa. To apply the Intermediate Value Theorem, we evaluate the polynomial at the endpoints of the interval [2, 3]. If f(2) and f(3) have opposite signs, it confirms that there is at least one real zero in that interval.
Recommended video: