1.9/10A - Rational Functions (Vertical Asymptotes and Holes)

Help a brother out? / mrhelpfulnothurtful
AP Precalculus Review: www.youtube.co...

[@HerlindaDelgadillo]

28:30 would we also square if both f(x) equalled to negative infinity?

[@MrHelpfulNotHurtful]

@@HerlindaDelgadillo Yes. And the C value would probably be negative.

[@gotb944]

10:20 i’m confused on why you didn’t include the outside x and just have x^2+4

[@MrHelpfulNotHurtful]

@@gotb944 I did include the outside X. At 10:20 I have written VA: x=0. That vertical asymptote is from the x on the outside.

[@gotb944]

@@MrHelpfulNotHurtfuloh i see. thank you for clearing that up!

[@MrHelpfulNotHurtful]

@@gotb944 😎

[@itsmearjunywhoony9212]

Wouldn't h(x) in the side lesson have one zero at -1?

[@MrHelpfulNotHurtful]

@@itsmearjunywhoony9212 No. zeros come from factors that are only in the numerator. (X-1) appears in the denominator as well so it does not give a zero. Rather it gives a hole in this case because the denominator will ultimately cancel out.