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Homework Help: 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
    That's a method of computing square roots by hand.

    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)

    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


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    Right, they won't let me have sharp things like pencils.
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