Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How to Differentiate Cross Product?

  1. Jul 16, 2007 #1
    Hi all,


    I have a qustion.

    dB/ds= -TN, dU/ds= KN (1)
    N= U x B (2)


    dN/ds=TB-KU (3)

    How Eq.(3) can be obtained from Eq.(1),(2)?


    Have a nice day!
     
  2. jcsd
  3. Jul 16, 2007 #2

    robphy

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    product rule
     
  4. Jul 17, 2007 #3

    mathwonk

    User Avatar
    Science Advisor
    Homework Helper

    just like any other product. leibniz rule.
     
  5. Jul 17, 2007 #4
    Thank you,

    I solved the equation. Thank you!
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook