If u can solve this u r genius!
(x2 - 1) (x2 + 1)-1 (1 + x4 )-1/2 dx

Question

If u can solve this u r genius!
   (x2 - 1) (x2 + 1)-1 (1 + x4 )-1/2 dx

anonymous · Answer

We have :
   (x2 - 1) (x2 + 1) = X^4-(+1)^4
And :
-1 (1 + x4 )=-1-x^4 
So have two things kill them : -x^4 and x^4 
So 
(x2 - 1) (x2 + 1)-1 (1 + x4 )=-1-x^4 =-2
and in the next -1/2x too .
So have :
-2-1/2x
For answer !
Just this :)
Got it ?:)
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anonymous · Answer

It is solved by integration

anonymous · Answer

You meant integration???

anonymous · Answer

yes!

anonymous · Answer

it is one of the toughest questions in mathematics !

anonymous · Answer

Must exactly told us what you meant .....

anonymous · Answer

what?

anonymous · Answer

You should have informed us what you exactly meant .... I thought of it a simple algebraic equation....

anonymous · Answer

but anyways it does not seem to be a algebric equation !

anonymous · Answer

dx is read to be sign of a differential element applying in integration. anyway, the answer is:|dw:1379255906037:dw|