J JH_33 New member Joined Jul 21, 2005 Messages 12 Oct 9, 2005 #1 I am having trouble finding the derivative. f(x) = [x + (1/x)][(x^2) - (1/x^2)] Thanks!
stapel Elite Member Joined Feb 4, 2004 Messages 16,543 Oct 9, 2005 #2 A good first step would be to multiply things out. How far have you gotten with that? Eliz.
J JH_33 New member Joined Jul 21, 2005 Messages 12 Oct 9, 2005 #3 I multiplied the two terms together: (x^6 + x^4 - x^2 - 1)/ (x^3) then took the derivative, but i'm not getting the answer thats in the back of the book.
I multiplied the two terms together: (x^6 + x^4 - x^2 - 1)/ (x^3) then took the derivative, but i'm not getting the answer thats in the back of the book.
stapel Elite Member Joined Feb 4, 2004 Messages 16,543 Oct 9, 2005 #4 How did x<sup>2</sup> times x equal x<sup>6</sup>? Please reply showing your steps. Thank you. Eliz.
J JH_33 New member Joined Jul 21, 2005 Messages 12 Oct 9, 2005 #5 ok...I found my mistake. Thanks for the help though.
