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Math Help - Find the Lim

  1. #1
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    Question Find the Lim

    hello Freidns,
    I am stuck at the problem,
    Find : lim x->infinity 23x^3+45/78x^3+9
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by harshal54321 View Post
    hello Freidns,
    I am stuck at the problem,
    Find : lim x->infinity 23x^3+45/78x^3+9
    Why would this be anything but infinity?

    RonL
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  3. #3
    Super Member

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    Hello, harshal54321!

    You really should learn to use parentheses.
    Don't make us guess at what you mean . . .



    . . . . 23x + 45
    . lim -------------
    x→∞ .78x + 9

    Divide top and bottom by x

    . . . . 23 + 45/x . . . .23 + 0 . . . . 23
    . lim .------------ . = . --------- . = . ---
    x→∞ .78 + 9/x . . . . 78 + 0 . . . . 78

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