Given r = 4 sin θ 4 , a. Replace r , θ by r , − θ in the equation. Does this show that the graph of the equation is symmetric with respect to the polar axis? b. The ordered pair r , 4 π − θ is another representation of the point r , − θ . Replace r , θ by r , 4 π − θ in the equation. Does this show that the graph of the equation is symmetric with respect to the polar axis? c. What other type of symmetry (if any) does the graph of the equation have? d. Use a graphing utility to graph the equation on a graphing utility for 0 ≤ θ ≤ 8 π .
Given r = 4 sin θ 4 , a. Replace r , θ by r , − θ in the equation. Does this show that the graph of the equation is symmetric with respect to the polar axis? b. The ordered pair r , 4 π − θ is another representation of the point r , − θ . Replace r , θ by r , 4 π − θ in the equation. Does this show that the graph of the equation is symmetric with respect to the polar axis? c. What other type of symmetry (if any) does the graph of the equation have? d. Use a graphing utility to graph the equation on a graphing utility for 0 ≤ θ ≤ 8 π .
Solution Summary: The author explains how to determine whether the graph of polar equation r=4mathrmsintheta is symmetric with respect to the axis.
a. Replace
r
,
θ
by
r
,
−
θ
in the equation. Does this show that the graph of the equation is symmetric with respect to the polar axis?
b. The ordered pair
r
,
4
π
−
θ
is another representation of the point
r
,
−
θ
. Replace
r
,
θ
by
r
,
4
π
−
θ
in the equation. Does this show that the graph of the equation is symmetric with respect to the polar axis?
c. What other type of symmetry (if any) does the graph of the equation have?
d. Use a graphing utility to graph the equation on a graphing utility for
0
≤
θ
≤
8
π
.
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Polar Coordinates Basic Introduction, Conversion to Rectangular, How to Plot Points, Negative R Valu; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=aSdaT62ndYE;License: Standard YouTube License, CC-BY