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I know this is represent an area of quarter circle of radius 2 and the answer must be Pi 

but can we use this method ( trigonometric substitution ) 

 

xvxvxv  Feb 21, 2015

Best Answer 

 #1
avatar+26406 
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You seem to have gone slightly astray here.

 

 Integral

 

Alan  Feb 21, 2015
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 #1
avatar+26406 
+5
Best Answer

You seem to have gone slightly astray here.

 

 Integral

 

Alan  Feb 21, 2015
 #2
avatar+1828 
0

oh yes yes .. hhhhhhhh I put sinx insted of cosx  

Thank you Alan =) 

xvxvxv  Feb 25, 2015

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