Class 12th : Calculus
posted by Akash .
If y = sqrt(x1)+sqrt(x+1),prove that sqrt(x^21)dy/dx=1y/2

take the derivative
dy/dx= 1/sqrt(x1)  1/sqrt(x+1)
= 1( sqrt(x+1) +sqrt(x1) )/ ( zzzz)
where zzzz= x+1x+1 (Prove that)which is 2
dy/dx= y/2