The function is .
Determine the end behavior of the graph of the function:
\Expand the polynomial.
\.
The polynomial function is of degree
.
The graph of f behave like for large values of
.
Find the intercepts of the function:
\Find the -intercepts by substituting
in
.
and
.
and
.
-intercepts are
and
.
Find the -intercepts by substituting
in
.
-intercept is
.
Determine the zeros of the function and their multiplicity :
\Use this information to determine whether the graph crosses or touches the -axis at each
-intercept.
The zeros of the function are and
.
The zero is a zero of multiplicity
, so the graph of
touches the
-axis at
.
The zero is a zero of multiplicity
, so the graph of
touches the
-axis at
.
Determine the maximum number of turning points on the graph of the function:
\Degree of the function is
.
Therefore, number of turning points .
At most turning points .
Determine the behavior of the graph of near each
-intercept:
Near :
A parabola that opens up.
\Near :
A parabola that opens up.
\ \ Put all the information from the steps 1 through 5 together to obtain graph of .
Graph the intercepts.
\Construct a table values to graph the general shape of the curve.
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Plot the points found in the table and connect the plotted points.
\Graph of the function :
.
Step 1: .
Step 2: -intercept is
and
-intercepts are
and
.
Step 3: and
; multiplicity
, touches
Step 4: At most turning points.
Step 5: Near :
.
Near :
.
Step 6: Graph of the function :
.