The function is .
Determine the end behavior of the graph of the function :
\Factor the polynomial function.
\.
The polynomial function is of degree
.
The graph of 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
crosses the
-axis at
.
The zero is a zero of multiplicity
, so the graph of
crosses the
-axis at
.
The zero is a zero of multiplicity
, so the graph of
crosses 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 line with slope .
Near :
A line with slope .
Near :
A line with slope .
Put all the information from the steps 1 through 5 together to obtain graph of :
Graph the intercepts.
\Construct a table of 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 :
.
The function in factored form is
Step 1 : .
Step 2 :
\- intercepts :
and
.
- intercept :
.
Step 3 : Zeros are and
: multiplicity
, crosses.
Step 4 : At most turning points.
Step 5 :
\Near :
.
Near :
.
Near :
.
Step 6 : Graph of the function :