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: Linear Equation Question

  1. Sep 10, 2008 #1
    1. The problem statement, all variables and given/known data
    Suppose the system below is consistent for all possible values of f and g. What can you say about the coefficients c and d?


    2. Relevant equations
    x1 + 3x2 = f
    cx1 + dx2 = g

    3. The attempt at a solution
    I really just have no idea what this says about c and d.
     
  2. jcsd
  3. Sep 10, 2008 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    Try solving the equations. Multiply the first one by c and subtract them and solve for x2. What could go wrong with this procedure?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook