1. Not finding help here? Sign up for a free 30min 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!

How do I perform these functions without using a calculator?

  1. Apr 3, 2009 #1
    Anyone know of books or websites that teach one how to find square roots, cube roots, sin, cosine, e, ln, pi and so forth without using a calculator because this stuff is not taught in schools, but instead is simply calculated with calculators which is not what I like considering taking things for advantage is never wise.
     
  2. jcsd
  3. Apr 3, 2009 #2
    http://www.itl.nist.gov/div897/sqg/dads/HTML/squareRoot.html
    That's a method of computing square roots by hand.

    http://www.itl.nist.gov/div897/sqg/dads/HTML/cubeRoot.html
    That's a method of computing cube roots by hand.

    http://www.uconn.edu/~cdavid/latex2html/mathreview/node18.html [Broken]
    Sine, cosine, e, and ln can all be approximated (albeit not with ease) using series approximations. (as well as Pi, but it's not fun)

    http://en.wikipedia.org/wiki/Numerical_approximations_of_π
    That's for numerical approximations of pi, have fun!
     
    Last edited by a moderator: May 4, 2017
  4. Apr 3, 2009 #3
    you could use a slide rule.
     
  5. Apr 3, 2009 #4
    Or crayons and a ruler.
     
  6. Apr 3, 2009 #5
    My preferred method
     
  7. Apr 3, 2009 #6

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    Right, they won't let me have sharp things like pencils.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook