Results 1 to 3 of 3

Math Help - HELP!! Find f(x) for the given function...

  1. #1
    Junior Member
    Joined
    Sep 2008
    From
    Canada
    Posts
    42

    HELP!! Find f(x) for the given function...

    Find f(x) for the given function f and simplify as much as possible
    <br />
f(x)=x^3-2x^2+20

    I'm really, really rusty...just started precalculus this fall and I can't remember how to do this (with the x^3...what is it called again?)
    Thank you in advanced!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Apr 2008
    Posts
    1,092
    You already have f(x), so you must be looking for something else. If it's the derivative of f(x), remember the power rule: \frac{d}{dx} x^n = nx^{n-1}. And the derivative of a sum of terms is the sum of the derivatives of each of the individual terms.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Sep 2008
    From
    Canada
    Posts
    42
    Quote Originally Posted by icemanfan View Post
    You already have f(x), so you must be looking for something else. If it's the derivative of f(x), remember the power rule: \frac{d}{dx} x^n = nx^{n-1}. And the derivative of a sum of terms is the sum of the derivatives of each of the individual terms.
    OH! I misinterpreted the question. Thank you, this is much easier than I thought it was, haha.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] How to find the function v=f(t,k) for which dv/dt = k/v
    Posted in the Calculus Forum
    Replies: 6
    Last Post: April 16th 2011, 09:26 AM
  2. Replies: 14
    Last Post: January 18th 2010, 06:16 PM
  3. Find a Function G and F[x]
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: October 13th 2007, 08:51 PM
  4. Replies: 3
    Last Post: July 17th 2007, 11:06 AM
  5. How do I find the function of x
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: November 27th 2005, 09:22 AM

Search Tags


/mathhelpforum @mathhelpforum