The function is .
Estimate the values and
from the graph.
.
.
.
.
.
Graph of .
1) Draw a coordinate plane.
\2) Plot the points ,
,
,
and
.
3) Connect the plotted points with smooth curve.
\Observe the graph:
\The function has a relative maximum at
.
The function has a relative maximum at
.
Graph of .
.