Determine if the graph is symmetric about the x-axis, the y-axis, or the origin.

r = 2 cos 5θ

Question

Determine if the graph is symmetric about the x-axis, the y-axis, or the origin.

r = 2 cos 5θ

anonymous · Answer

r=2 cos 5 theta 
I know it is not the y

anonymous · Answer

@amistre64 @ganeshie8 @SolomonZelman

anonymous · Answer

@e.mccormick @asnaseer @amistre64 @Ashleyisakitty

anonymous · Answer

I am loking at the graph and cant tell

amistre64 · Answer

is the site lagging for you as well?  my computer is slow at the moment

anonymous · Answer

Yes ;:/

amistre64 · Answer

an idea i have is to plot some points:

theta = 0, pi/4, pi/2, 3pi/4, pi  all the way to 2pi and see how its shaping up.  other than that i would have to try to recall if we can convert this to cartesians

anonymous · Answer

http://www.wolframalpha.com/input/?i=r+%3D+2+cos+5%CE%B8

anonymous · Answer

Im guessing it is the origin I only have 2 more minutes allowed time on the computer

anonymous · Answer

@amistre64

amistre64 · Answer

i used wok as well and got this graph:

pages arent loading for me that well.

anonymous · Answer

So x axis then

amistre64 · Answer

there might be some function properties dealing with polar equations that we could have used but i simply cant remember any of them off hand

anonymous · Answer

thanks anyways

amistre64 · Answer

good luck :)