The polar equation is
.
Identify the type of conic, rewrite the equation in the form
\
is a conic,
where
is the eccentricity and
is the distance between
the focus(pole) and the directrix.
\Consider
.
Divide numerator and denominator by 2.
\
.
Compare it with
.
.
Since
, the equation represents an ellipse.
Graph the above polar equation using some polar coordinates.
\For
,
.
For
,
.
For
,
.
For
,
.
For
,
.
For
,
.
Make a table for a different values of
.
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Graph:
\Draw the polar coordinate plane.
\Plot the polar coordinates found in the table.
\Connect the points with smooth curve.
\Observe the graph:
\The polar equation represents an ellipse.
\The conic represents an ellipse.
\Graph the equation
.