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Math Help - Fuction help

  1. #1
    Newbie
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    Jul 2009
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    Fuction help

    if f(x-1)=x+2, the f(x^2-1)=?

    How do I solve it?
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  2. #2
    Senior Member
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    Jul 2009
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    397
    Hi shrrikesh

    f(x-1) = x + 2
    f(x-1) = (x-1) + 3 ------> f(x) = .....

    Then, f(x^2 - 1) = .....
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  3. #3
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    f(x)=???

    Well. I've never done this type of problem in my school.
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  4. #4
    Senior Member
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    Hi shrrikesh

    f(x-1) = (x-1) + 3, let : x-1 = a

    f(a) = a + 3. It means that f(x) = x + 3
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