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: Simultaneous equations using exponential functions

  1. Apr 7, 2010 #1
    1. The problem statement, all variables and given/known data

    Solve the following equations using simultaneous equations

    2. Relevant equations

    32x[tex]\times[/tex]23y=17

    4x[tex]\times[/tex]5y=37

    Appologies for the bad equation set-up. The large 'x' is a multiplication sign.


    3. The attempt at a solution
    My attempt was to divide both of the equations together and then solve for x and y respectively, using the laws of logarithms.

    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 7, 2010 #2

    ehild

    User Avatar
    Homework Helper

    What about taking the logarithm of both equations?

    ehild
     
  4. Apr 7, 2010 #3

    HallsofIvy

    User Avatar
    Science Advisor

    Excellent suggestion!
     
  5. Apr 7, 2010 #4
    Yes, i tried this. However the answer i get does not match the answer set in the textbook!
     
  6. Apr 7, 2010 #5

    ehild

    User Avatar
    Homework Helper

    Show your work.

    ehild
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook