Asymptotes Parallel to the axes.












0












$begingroup$


I need proof of this theorem.



Theorem: A straight line $y=c$ is an asymptote of a curve $f(x,y)=0$ iff $y - c$ is a factor of the co-efficient of the highest power of $x$ in $f (x,y)$.










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$endgroup$












  • $begingroup$
    Do you assume that $f(x,y)$ is a polynomial?
    $endgroup$
    – Andrei
    Jan 9 at 16:24










  • $begingroup$
    @Andrei , Yes f(x,y) is a polynomial.
    $endgroup$
    – Katakuri
    Jan 9 at 17:43










  • $begingroup$
    @Andrei can you provide me the proof?
    $endgroup$
    – Katakuri
    Jan 11 at 12:54
















0












$begingroup$


I need proof of this theorem.



Theorem: A straight line $y=c$ is an asymptote of a curve $f(x,y)=0$ iff $y - c$ is a factor of the co-efficient of the highest power of $x$ in $f (x,y)$.










share|cite|improve this question











$endgroup$












  • $begingroup$
    Do you assume that $f(x,y)$ is a polynomial?
    $endgroup$
    – Andrei
    Jan 9 at 16:24










  • $begingroup$
    @Andrei , Yes f(x,y) is a polynomial.
    $endgroup$
    – Katakuri
    Jan 9 at 17:43










  • $begingroup$
    @Andrei can you provide me the proof?
    $endgroup$
    – Katakuri
    Jan 11 at 12:54














0












0








0





$begingroup$


I need proof of this theorem.



Theorem: A straight line $y=c$ is an asymptote of a curve $f(x,y)=0$ iff $y - c$ is a factor of the co-efficient of the highest power of $x$ in $f (x,y)$.










share|cite|improve this question











$endgroup$




I need proof of this theorem.



Theorem: A straight line $y=c$ is an asymptote of a curve $f(x,y)=0$ iff $y - c$ is a factor of the co-efficient of the highest power of $x$ in $f (x,y)$.







functions rational-functions






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share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Jan 9 at 16:31









N. F. Taussig

44.5k93357




44.5k93357










asked Jan 9 at 16:10









KatakuriKatakuri

1




1












  • $begingroup$
    Do you assume that $f(x,y)$ is a polynomial?
    $endgroup$
    – Andrei
    Jan 9 at 16:24










  • $begingroup$
    @Andrei , Yes f(x,y) is a polynomial.
    $endgroup$
    – Katakuri
    Jan 9 at 17:43










  • $begingroup$
    @Andrei can you provide me the proof?
    $endgroup$
    – Katakuri
    Jan 11 at 12:54


















  • $begingroup$
    Do you assume that $f(x,y)$ is a polynomial?
    $endgroup$
    – Andrei
    Jan 9 at 16:24










  • $begingroup$
    @Andrei , Yes f(x,y) is a polynomial.
    $endgroup$
    – Katakuri
    Jan 9 at 17:43










  • $begingroup$
    @Andrei can you provide me the proof?
    $endgroup$
    – Katakuri
    Jan 11 at 12:54
















$begingroup$
Do you assume that $f(x,y)$ is a polynomial?
$endgroup$
– Andrei
Jan 9 at 16:24




$begingroup$
Do you assume that $f(x,y)$ is a polynomial?
$endgroup$
– Andrei
Jan 9 at 16:24












$begingroup$
@Andrei , Yes f(x,y) is a polynomial.
$endgroup$
– Katakuri
Jan 9 at 17:43




$begingroup$
@Andrei , Yes f(x,y) is a polynomial.
$endgroup$
– Katakuri
Jan 9 at 17:43












$begingroup$
@Andrei can you provide me the proof?
$endgroup$
– Katakuri
Jan 11 at 12:54




$begingroup$
@Andrei can you provide me the proof?
$endgroup$
– Katakuri
Jan 11 at 12:54










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