The functions are and
.
Find intersection points.
\Substitute in
.
,
,
and
.
imaginary oots are not constder ,hence and
.
At ,
At ,
The intersection points are and
.
The functions is .
Differentiate on each side with respect to .
At point ,
slope is
.
The slope point form is .
Substitute ,
and
in
.
At point the tangent line is
.
The functions is .
Differentiate on each side with respect to .
.
The slope .
At point ,
slope is
.
The slope point form is .
Substitute and
in
.
At point the tangent line is
.
Graph:
\Observe from the graph :
\Both the tangents are orthogonal to each other.
\