Arc length

  • Thread starter silverbabe
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How do I solve this ?
 

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Weierstrass substitution.
 
HallsofIvy
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i.e. a trig substitution.
 
Defennder
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I didn't know that was called Weierstrass substitution. I've always known it as "t-formula".
 
okay..... I´m lost!
 
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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