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alwc
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How to calculate the drivative of tan 1 (x/sqrt(1x^2))?
The solution says it set y = as sqrt(x1) and it gives dy/dx = 1/(2sqrt(x1)). How is that possible? (Problem 2 18.01, Integration Techniques PDF 5A  3g)
 11 months ago
 11 months ago
alwc Group Title
How to calculate the drivative of tan 1 (x/sqrt(1x^2))? The solution says it set y = as sqrt(x1) and it gives dy/dx = 1/(2sqrt(x1)). How is that possible? (Problem 2 18.01, Integration Techniques PDF 5A  3g)
 11 months ago
 11 months ago

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creeksider Group TitleBest ResponseYou've already chosen the best response.2
This is actually a pretty cool problem, but a tough one, even with the minimal explanation provided in the materials. A full explanation is too long to type here so I wrote it up separately and posted it as a PDF.
 11 months ago

alwc Group TitleBest ResponseYou've already chosen the best response.0
Thanks creeksider!!
 11 months ago

Shihab Group TitleBest ResponseYou've already chosen the best response.0
Try to use Method of Substitution here x=cos2A will work
 11 months ago

tderifield Group TitleBest ResponseYou've already chosen the best response.0
@creeksider, I cannot up vote your explanation enough! I was close working it out by myself but lacked confidence that my page of calculations was going anywhere because the given solution seemed so elegant. I kept quitting and starting over. Your write up cured that lack of confidence...for this problem at least! Thank you.
 5 months ago
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