A. 1/2(1+x2)√Tan-1 x
B. 1/2(1-x2)√Tan-1 x
C. 1/2(1+x2) Tan-1 x
D. 1/2(1-x2) Tan-1 x
If x2+xy+y2=a2, then y2=
If x= asin 2θ(1+ cos 2θ), y= bcos 2θ(1-cos 2θ), then dy/dx=
If x= 2/t2, y=t3-1, then d2y/dx2=
If y= xsin x+(sin x)x then dy/dx=
If y=Sin-1(x2-1/2) then dy/dx at x=0 is
If x= 2 cos t- cos 2t, y= 2 sin t- sin 2t then dy/dx=
d/dx{Tan-1√(1-cos x)/(1+cos x)}=
If ay= sin(x+y) then y2+(1+y1)3 y=
If y= a cos mx+b sin m=mx, then d2y/dx2=
If y=2 Tan-1(x√2/1-x2)+log(1+x√2+x2/1-x√2+x2), then dy/dx=