A. m sin (2mx)/nsin(2ny)
B. m cos(2mx)/nsin(2ny)
C. mcos(2mx)/n cos(2ny)
D. m sin(2mx)/n cos (2ny)
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