`n{P[P(phi)]}=` where `P(phi)={phi}`

If P( 3 sec theta, 2 tan theta ) and Q( 3sec phi, 2 tan phi ) " where" theta +phi =(pi )/(2) , be two distinct points on the hyperbola (x^(2))/( 9) -(y^(2))/( 4) =1 . Then the coordinate of the points of intersection of the normals at P and Q is

Let P(a sec theta , b tan theta ) and Q(a sec phi , b tan phi) where theta + phi = (pi)/(2) be two point on the hyperbola (x^(2))/(a^(2)) - (y^(2))/(b^(2)) =1 .If ( h, k) be the point of intersection of the normals at P and Q , then the value of k is -

If P(3 sec theta,2 tan theta) and Q(3 sec phi , 2 tan phi) where theta+pi=(phi)/(2) be two distainct points on the hyperbola then the ordinate of the point of intersection of the normals at p and Q is

Solve (dy)/(dx)+y phi'(x)=phi(x).phi'(x), "where" " "phi(x) is a given function.

Solve (dy)/(dx)+y phi'(x)=phi(x).phi'(x), "where" " "phi(x) is a given function.

Solve (dy)/(dx)+y phi'(x)=phi(x).phi'(x), "where" " "phi(x) is a given function.