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

Homework Help: Tensor problems please help

  1. Apr 27, 2012 #1
    1. find ∂r/∂x[itex]_{j}[/itex], where r=|[itex]\underline{x}[/itex]|

    2. is this the same as differentiating a modulus of a vector?
     
  2. jcsd
  3. Apr 27, 2012 #2

    phyzguy

    User Avatar
    Science Advisor

    Try writing r out in components, i.e. r = f(x1,x2,x3,...) and I think it will be obvious what you need to do.
     
  4. Apr 27, 2012 #3
    thats what i dunno... what is the component for a mod x?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook