1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Uncorrelated uncertainties

  1. Jan 29, 2009 #1
    1. The problem statement, all variables and given/known data
    For uncorrelated uncertainties [tex]\delta[/tex] x and [tex]\delta[/tex] y give the values and uncertainties for W in standard format.
    A.) W=x+y with x=4.2(0.2) and y=0.7(0.1)

    2. Relevant equations

    3. The attempt at a solution
    well i think i am supposed to take the partial derivatives of W with respect to x and y (dW/dx and dW/dy) which both =1. Then is the total derivative DW/DXorY = 1+1 dx/dy? Or do I only use the derivatives for the uncertainties and just plug x and y, 4.2 and 0.7, into W?
    Last edited: Jan 29, 2009
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted