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anonymous
 one year ago
Need help! How does integral of sinx  cscx become cosx?
anonymous
 one year ago
Need help! How does integral of sinx  cscx become cosx?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438832459561:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0...does anyone know whats going on?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0http://www.wolframalpha.com/input/?t=crmtb01&f=ob&i=integral%20of%20sin%20x%20%20csc%20x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well.. thats the answer in the back of the book buddy

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0Well, textbooks aren't perfect.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438832964732:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, so let me just write down the original integral problem

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438833089151:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So that was the original problem... and know Im trying to figure out how to get to the answer... which apparently is: sec(x)+c

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait, whyd you delete it?!

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0HINT: Use usubstitution here. \[\int \dfrac{\sin x}{\cos^2 x} ~\mathrm dx\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0We havent learned that

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0what do you know so far?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0We have never applied U substitution method so far in class

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0What method did you learn?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Just evaluating the integral normally

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0Ok, do you use integral table or something?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0You do know that \(\dfrac{\sin x}{\cos^2x} = \tan x\sec x\)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wouldnt it be adding tanx + sec x

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0So can you evaluate integral now?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The answer is clear now
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