A. 2x tan -1 x
B. -2x tan -1 x
C. x tan -1 x
D. -x tan -1 x
If x2y-x3(dy/dx)=y4cosx then x3y is equal to
If (dy/dx)=[y+xtan(y/x)]/x then sin(y/x) is equal to
The equation of the hyperbola with its transverse axis is parallel to x-axis, and its centre is (-2,1), the length of transverse axis is 10 and eccentricity 6/5 is