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January 25, 2015

January 25, 2015

Posted by **Akash** on Thursday, June 9, 2011 at 1:26pm.

- Class 12th : Calculus -
**bobpursley**, Thursday, June 9, 2011 at 2:05pmtake the derivative

dy/dx= -1/sqrt(x-1) - 1/sqrt(x+1)

= -1( sqrt(x+1) +sqrt(x-1) )/ ( zzzz)

where zzzz= x+1-x+1 (Prove that)which is 2

dy/dx= -y/2

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