The distance of a point `(x_1, y_1)` from two straight lines which pass through the origin of coordinates is `pdot` Find the combined equation of these straight lines.

Answer

y^2−[2x1
y
1
/
(
x
2
1
−
p
2
)
]
x
y
+
[
(
y
2
1
−
p
2
)
/
(
x
2
1
−
p
2
)
]
x
2
=
0