A. 1/1+sin x
B. 1/1+cos x
C. 1/1+tan x
D. 1/1+ cot x
d/dx{Tan-1(x/1+√1-x2)}=
If x<1 then (1-2x/1-x+x2)+(2x-4x3/1-x2+x4)+(4x3-8x7/1-x4+x8)+...∞=
If y= ax2+b/x then x2y2=
If x= a cos θ (1+cos θ), y=sin θ(1+cos θ) then (dy/dx)θ=π/2
The derivative of √(Tan-1 x) w.r.to x is
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