Evaluating functions for numeric values

The video tutorial explains how to evaluate a polynomial function P of X = 2X^2 - 4X + 1 at specific values of X. It begins with an introduction to the function and the task of finding P(2) and P(-1). The tutorial then reviews basic function concepts using F of X = X + 1 as an example. It proceeds to demonstrate the evaluation of P at X=2, emphasizing the order of operations. Finally, it shows the evaluation of P at X=-1, highlighting the handling of negative inputs.

What is the expression for the function P(x) introduced in the video?

• P(x) = 2x^2 - 4x + 1

• P(x) = x^2 + 4x - 1

• P(x) = x^2 - 4x + 1

• P(x) = 2x^2 + 4x - 1

What is the value of F(x) when x = 3, given F(x) = x + 1?

• 5

• 4

• 3

• 2

What is the first step in evaluating a function at a specific point?

• Add all terms together

• Subtract the constant term

• Plug the value into the function

• Multiply all coefficients

What is the value of P(2) for the function P(x) = 2x^2 - 4x + 1?

• 2

• 0

• 1

• 3

What is the result of evaluating P(-1) for the function P(x) = 2x^2 - 4x + 1?

• 9

• 7

• 5

• 3