A parabola
with equation
and parabola
with equation
, are given. A line
is tangent to
Find the locus of pole
of the line
with respect to
%V0
$(BEL 1)$ A parabola $P_1$ with equation $x^2 - 2py = 0$ and parabola $P_2$ with equation $x^2 + 2py = 0, p > 0$, are given. A line $t$ is tangent to $P_2.$ Find the locus of pole $M$ of the line $t$ with respect to $P_1.$
Školjka