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Math 3
Home
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 7
Unit 8
Final Exam
Math 3
Home
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 7
Unit 8
Final Exam
More
Home
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 7
Unit 8
Final Exam
Unit 4
Notes Slides
Text Pages
Honors Rational Functions lessons
Unit 4 Rational Functions PDF.pdf
Help Videos
Graphing rational functions according to asymptotes
Sal analyzes the function f(x)=(3x^2-18x-81)/(6x^2-54) and determines its horizontal asymptotes, vertical asymptotes, and removable discontinuities.
Intro to rational expression simplification
Sal explains what it means to simplify a rational expression and why we would want to do that. Just don't forget the excluded values!
Adding & subtracting rational expressions: like denominators
Sal adds 6/(2x²-7) + (-3x-8)/(2x²-7) and subtracts (9x²+3)/(14x²-9) - (-3x²+5)/(14x²-9).
Rational equations intro
When we have an equation where the variable is in the denominator of a quotient, that's a rational equation. We can solve it by multiplying both sides by the denominator, but we have to look out for extraneous solutions in the process.
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