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: Help with arithmetic in calc class please

  1. Dec 5, 2007 #1
    Given the approximate values: ln(2)=0.7 and ln(10)=2.3
    Use these approximations and an indirect argument using only arithmetic to explain how many decimal digits to expect in the number 2^40 and how do you know your correct?

    Well i know that we'll know if we are correct based on the decimal digits the calculator provides but how do I go about solving for the number of digits??I would greatly appreciate any help thankyou
  2. jcsd
  3. Dec 5, 2007 #2
    i got it, nevermind
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook