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!

Solving a hard equation

  1. Nov 15, 2004 #1
    I have the given equation: (6^x+6^-x)/6 = 2. How do you solve this?
  2. jcsd
  3. Nov 15, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    1. Multiply your equation with [tex]6^{x}[/tex]
    2. You have now a quadratic equation in the unknown [tex]y=6^{x}[/tex]
    As an alternative, use the identity:
    Last edited: Nov 15, 2004
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook