A. 1
B. 1/2
C. 1/4
D. 1/8
If cos x/2 . cos x/22. Cos x/23.... cos x/2n= sin x/2nsin (x/2n) then (1/22)sec2x/2+(1/24) sec2x/22...(1/22n)sec2x/2n=
If ax2+2hxy+by2=1 then (hx+by)3y2=
d/dx{Tan-1(acos x-bsin x/b cos x+a sin x)}=
If sin2 mx+cos2 ny=a2 then dy/dx=
If x=sin-1t, y= √(1-t2) then d2y/dx2=
The derivative of cos hx/2w.r.to x is
If P(x)is a polynomial of 3rd degree and P’’(1)=0, P’’’(1)=6 then P’’(0)=
Let f(x+y)= f(x)f(y) for all x,y ε R. If f is differentiable at x=0, then
The derivative of (log x)xw.r.to x is
The derivative of cot-1(cosec x-cot x) w.r.to x is