AP Pre-Calc Unit 2.4-2.5 Review

Determine if (X+5) is a factor

Divide, if result in 0, it is a factor.

x²+16 (factor)

(x+4i)(x-4i)

How to find domain?

Factor denominator to find values that equal zero, exclude from domain.

How to find removable discontinuities? (Holes)

Factor the function and identify common factors in the numerator and denominator.

How to find infinite discontinuities? (V.A)

Identify values that make the denominator zero but not the numerator.

How to find x:intercepts?

Set the numerator equal to zero and solve for x.

How to find y-intercept?

Set the value of x to zero and solve for y.

How to find limit as x approaches infinity?

Evaluate if even or add, and if positive or negative.

Or Graph.