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Horizontal Asymptotes
Algebra 2/Trigonometry Section 9.2, 9.3 Rational Functions – Notes Day 2 The degree of the each polynomial, N(x) and D(x), allows us to determine if we have an Horizontal Asymptote (H.A.) OR a Slant Asymptote (S.A.). Horizontal Asymptotes The graph of a rational function will have horizontal asymptotes whenever the leading power on the bottom is _____________ _____________ or ______________ to the leading power on the top. CASE 1: Denominator Degree is Greater If the bottom degree is greater than the top degree, then the horizontal asymptote is _____________ (the __________). Examples: Vertical Asymptotes Horizontal Asymptotes 1. 2. CASE 2: Degrees are Equal If the bottom degree is _____________ the top degree , the horizontal asymptote is y = ____________________________________________. Examples Vertical Asymptotes Horizontal Asymptotes 1. 2.
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Ex. 1: Ex. 2: S.A. _____________ S.A. _____________ V.A. _____________
Slant Asymptotes Numerator Degree is Greater If the leading top degree is ____________________________ more than the leading bottom degree, then the graph will have a slant asymptote. Procedure to find the slant asymptote: 1) ___________________________ 2) ____________________ 3) _____________________ Ex. 1: Ex. 2: S.A. _____________ S.A. _____________ V.A. _____________ V.A. _____________ Ex. 3 S.A. ___________________ V.A. ____________________ Hole(s): _____________ Ex. 4: Ex. 5: S.A. ______________________________ S.A. ______________________________
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