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Math Help - function

  1. #1
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    function

    given that f(x) = Ln(x), determine which of the following statements is/are true. justify
    a. f(x-2) = f(x) -f(2), x>0
    b. if f(u) = 2f(v), then v= u^2
    c. if f(x)<0, then 0<x<1
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  2. #2
    Senior Member nikhil's Avatar
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    Quote Originally Posted by talor View Post
    given that f(x) = Ln(x), determine which of the following statements is/are true. justify
    a. f(x-2) = f(x) -f(2), x>0
    b. if f(u) = 2f(v), then v= u^2
    c. if f(x)<0, then 0<x<1
    The correct answer is c
    f(x-2)=ln(x-2)
    if f(u) = 2f(v), then u= v^2 not v= u^2
    c is correct for a log function
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