Results 1 to 4 of 4

Math Help - Function composition

  1. #1
    Senior Member
    Joined
    Jul 2006
    From
    Shabu City
    Posts
    381

    Smile Function composition

    Given f(x) = \frac{3}{x}

    Is it gonna be f(x+h) = \frac{3}{x} + h
    or
    f(x+h)=\frac{3}{x+h}


    another question
    Given G(x) = \sqrt{4-x}

    is it gonna be G(x+h) = \sqrt{4-x+h} or \sqrt{4-x} + h?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member malaygoel's Avatar
    Joined
    May 2006
    From
    India
    Posts
    648
    Quote Originally Posted by ^_^Engineer_Adam^_^ View Post
    Given f(x) = \frac{3}{x}

    Is it gonna be f(x+h) = \frac{3}{x} + h
    or
    f(x+h)=\frac{3}{x+h}


    another question
    Given G(x) = \sqrt{4-x}

    is it gonna be G(x+h) = \sqrt{4-x+h} or \sqrt{4-x} + h?
    in the first question,
    you are replacing x by x+h in left hand side......... so what would be the change in right hand side, x would be replaced by x+h, hence your second attempt is correct..

    Think about the second question the same way
    Keep Smiling
    Malay
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Jul 2006
    From
    Shabu City
    Posts
    381
    G(x) = \sqrt{4-x+h}or \sqrt{4-(x+h)}?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Global Moderator

    Joined
    Nov 2005
    From
    New York City
    Posts
    10,616
    Thanks
    10
    Quote Originally Posted by ^_^Engineer_Adam^_^ View Post
    G(x) = \sqrt{4-x+h}or \sqrt{4-(x+h)}?
    Second one.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Function Composition.
    Posted in the Algebra Forum
    Replies: 2
    Last Post: December 8th 2011, 01:04 PM
  2. function composition
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: February 27th 2009, 11:15 AM
  3. Composition of a function
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: October 17th 2008, 02:20 PM
  4. Function Composition
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: September 14th 2008, 01:28 PM
  5. function composition
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: June 25th 2006, 06:51 AM

Search Tags


/mathhelpforum @mathhelpforum