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


.
The slope of the tangent line is
.
The slope of the tangent at
.
.
The slope intercept form of line equation is
.
Substitute
and
.



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

The tangent line is
.
Graph of the function
and the line
.
