Unit 4C - Domain Restrictions & Discontinuities

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Mathematics
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9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a vertical asymptote?
Back
A vertical asymptote is a line x = a where a function approaches infinity or negative infinity as the input approaches a from the left or right.
2.
FLASHCARD QUESTION
Front
How do you find vertical asymptotes in a rational function?
Back
Vertical asymptotes are found by setting the denominator of the rational function equal to zero and solving for x.
3.
FLASHCARD QUESTION
Front
What is a horizontal asymptote?
Back
A horizontal asymptote is a line y = b that a function approaches as x approaches infinity or negative infinity.
4.
FLASHCARD QUESTION
Front
How do you determine horizontal asymptotes for rational functions?
Back
For rational functions, compare the degrees of the numerator and denominator: If the degree of the numerator is less, y = 0; if equal, y = leading coefficient of numerator/leading coefficient of denominator; if greater, no horizontal asymptote.
5.
FLASHCARD QUESTION
Front
What is a slant (oblique) asymptote?
Back
A slant asymptote occurs when the degree of the numerator is exactly one more than the degree of the denominator.
6.
FLASHCARD QUESTION
Front
How do you find slant asymptotes?
Back
To find a slant asymptote, perform polynomial long division on the rational function.
7.
FLASHCARD QUESTION
Front
What is a hole in a rational function?
Back
A hole occurs in a rational function at a point where both the numerator and denominator are zero, indicating a removable discontinuity.
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