The equation of parabola is and the point is
.
Slope of the tangent is derivative of the curve.
\Apply derivative on each side with respect to .
Slope of the tangent is .
Point-slope form of line equation : .
Substitute and
in the above formula.
This is a pair of tangent lines.
\These tangent lines intersect the parabola, and the intersecting points can be determined by solving them.
\Substitute in the curve
.
and
.
Substitute values in
.
If , then
.
If , then
.
Therefore, the points at tangent lines intersect parabola are and
.
Graph:
\Graph the parabola with the tangent lines with intersecting points and
.
Intersecting points are and
.
Graph:
\.