Which of the following is not the differential equation of family of curves whose tangent from an angle of `pi/4` with the hyperbola `xy=c^(2)`?

Which of the following is not the differential equation of family of curves whose tangent form an angle of (pi)/(4) with the hyperbola xy=c^(2)?(a)(dy)/(dx)=(x-y)/(x+y)(b)(dy)/(dx)=(x)/(x-y)(c)(dy)/(dx)=(x+y)/(x-y) (d)N.O.T.

Which of the following is not the differential equation of family of curves whose tangent form an angle of pi/4 with the hyperbola xy= c^2 ?

Which of the following is not the differential equation of family of curves whose tangent form an angle of pi/4 with the hyperbola xy= c^2 ?

The differential equation of family of curves whose tangent form an angle of pi/4 with the hyperbola xy=C^2 is

Which of the following is not the differential equation of family of curves whose tangent form an angle of pi/4 with the hyperbola xy= c^2 ? (a) dy/dx=(x-y)/(x+y) (b)dy/dx=(x)/(x-y) (c)dy/dx=(x+y)/(x-y) (d)N.O.T.

The differential equation of family of curves whose tangent form an angle of (pi)/(4) with the hyperbola xy=C^(2) is

The family of curves whose tangent form an angle (pi)/(4) with the hyperbola xy=1,is

The family of curves whose tangent form an angle (pi)/(4) with the hyperbola xy=1,is

The family of curves whose tangent form an angle (pi)/(4) with the hyperbola xy=1,is