1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The 1st and 2nd derivative

  1. Jul 29, 2007 #1
    find the 1st and 2nd derivative of the following equation

    step by step.
    Thanks alot!
  2. jcsd
  3. Jul 29, 2007 #2


    User Avatar
    Homework Helper

    Any ideas on this one? if this is a function of z, and you're differentiating with respect to z, does the product rule sound familiar?
  4. Jul 29, 2007 #3
    Ok, I get it
    it is -2Z (-2z)e^-(z^2) - [e^-(z^2)*(-2)]
    and then:
    4z^2 * e^-(z^2) + 2e^-(z^2)
    Thanks alot!!!!
  5. Jul 29, 2007 #4


    User Avatar
    Science Advisor
    Homework Helper

    Yep, that's the way to go.
    But are you sure about that minus sign?
    Can you quote the product rule?
  6. Jul 29, 2007 #5
    Oh, I am so sorry it is
    -2Z (-2z)e^-(z^2)+ [e^-(z^2)*(-2)]
    So, we will have
  7. Jul 29, 2007 #6
    that looks right. Remember, (first) *(derivative of the second) + (second) * (derivative of first). Of course you can change the order, same answer.
  8. Jul 29, 2007 #7
    thanks alot for all!!!!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: The 1st and 2nd derivative
  1. 1st and 2nd Derivative (Replies: 2)

  2. 1st and 2nd Derivative (Replies: 4)