The function is
and the point is
.
Apply derivative on each side with respect to
.



.
\
Slope at the point is
.
Substitute
in
.



.
The slope of the tangent line is
.
Find the tangent line.
\Point-slope form of line equation :
.
Substitute
and
in point-slope form.



.
The tangent line is
.
Graph :
\Graph the function
and tangent line
at
.
The tangent line is
.
Graph :
\Graph of the function
and tangent line
at
.
\
.