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Arc length

  1. Jun 24, 2008 #1
    How do I solve this ?

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  2. jcsd
  3. Jun 25, 2008 #2
    Weierstrass substitution.
  4. Jun 25, 2008 #3


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    i.e. a trig substitution.
  5. Jun 25, 2008 #4


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    I didn't know that was called Weierstrass substitution. I've always known it as "t-formula".
  6. Jun 25, 2008 #5
    okay..... I´m lost!
  7. Jun 25, 2008 #6
    Silverbabe, search for "Weierstrass substitution" or "trigonometric substitution" in your calculus book, library, the Internet, or Wikipedia, and you'll find out what it means
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