[" 9.Find the condition that one of the lines given by "ax^(2)+2hxy+by^(2)=0" may coincide with one of the "],[" by "a'x^(2)+2h'xy+b'y^(2)=0" ."]

Find the condition that one of the lines given by ax^2+2hxy+by^2=0 may coincide with one of the lines given by a' x^2 +2h'xy+b'y^2=0

Find the condition that one of the lines given by ax^2+2hxy+by^2=0 may coincide with one of the lines given by a' x^2 +2h'xy+b'y^2=0

Find the condition that one of the lines given by ax^2+2hxy+by^2=0 may coincide with one of the lines given by a' x^2 +2h'xy+b'y^2=0

Find the condition that one of the lines given by ax^2+2hxy+by^2=0 may coincide with one of the lines given by a' x^2 +2h'xy+b'y^2=0

Find the condition that the one of the lines given by ax^2+2hxy+by^2=0 may be perpendicular to one of the lines given by a'x^2+2h'xy+b'y^2=0

Find the condition that the one of the lines given by ax^2+2hxy+by^2=0 may be perpendicular to one of the lines given by a'x^2+2h'xy+b'y^2=0

If one of the lines given by ax^(2)+2hxy+by^(2)=0 is 4x-5y=0 then

The condition that one of the straight lines given by the equation ax^(2)+2hxy+by^(2)=0 may coincide with one of those given by the equation a'x^(2)+2h'xy+b'y^(2)=0 is

The condition that one of the straight lines given by the equation ax^(2)+2hxy+by^(2)=0 may coincide with one of those given by the equation a'x^(2)+2h'xy+b'y^(2)=0 is

The condition that one of the straight lines given by the equation ax^(2)+2hxy+by^(2)=0 may coincide with one of those given by the equation a'x^(2)+2h'xy+b'y^(2)=0 is