Q.26 the general solution of the surfaces which are perpendicular to the family of surfaces z = kxy,k er is options 1. x2-y2, xz) = 0, dec (r) 2 o(x2-y2,x2 + z2

Q.26 The general solution of the surfaces which are perpendicular to the family of surfaces z = kxy,k eR is options 1. x2-y2, xz) = 0, dEC (R) 2 o(x2-y2,x2 + z2) = 0, ¢ eCi(R2) 3 o2-y,2x2 +z2) = 0, dEC (R) ox+y', 3x2 - z?) = 0, ¢ec(R)