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March 29, 2017

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given the following rational function
f(x)= x^2+5x-7 / x-4

state domain, find vertical, horizontal and oblique asymptotes if any. I found the domain to be (-inf.,4)U(4, inf.) and vertical asymptote at x=4 am I right? can someone help me with the rest?

  • precalculus - ,

    what about the oblique asymptote ?

    divide out the right side (I used synthetic division)
    f(x) = x + 9 + 29/(x-4)

    so the oblique asymtote is
    y = x+9

    see:
    http://www.wolframalpha.com/input/?i=%28x%5E2%2B5x-7%29%2F%28x-4%29

  • precalculus - ,

    Reiny:

    Thanks for the websites - they have helped immensely.

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