Graphing a Polar Curve - Part 1

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Who Else came here because their final is tomorrow?

anindahalder

7 years later and your video is still saving lives

annuhbananuh

thank you SO MUCH for showing the two graphs and drawing the bottom based off the top, it explains every question i had from my class. youre the best man. best of luck to all who have exams tomorrow.

diy-projects

When he did 2theta=pi/2 to find the increments, can I do that for every situation or is it restricted to cosine functions?

Xisgow

well, this helps me to decide how i label units on the x-axis

patrickjmt

running out of time on a 6 min video in 2008 meanwhile videos nowadays on youtube can be an hour long...

dildobaggins

glad i was able to help, cesar!
thanks for the kind words!!

patrickjmt

hey bro, guess what?!...you are the best =D

jimmysilva

The period of the curve is equal to (2pi) divided by the integer in front of theta so for...
r = 4 sin(3theta)
the period is determined by...
(2pi)/3

Or in the example above...
(2pi)/2 (because it was cos(2theta)) so the period is pi

Once you know the period, you just divide by four to get the zero's, crest, and trough.

Hope this helps.

SpeedyRK

Thank you sir
I want to give you likes
You are a genius man

AbhiEducationFactory

@Thunder7messiFan come back next semester and tell your friends! : )

patrickjmt

When he is translating his reference graph to a polar one, why does he have r in the y axis and theta in x axis? I though polar coordinates are expressed by (r, theta)

pandalace_

this video was posted exactly 10 years ago today and it's still helping me with my class...wow, thank you

Pepperlover

question though.. why did you chose to equal the 2Theta to Pi/2?

brokenoob

I fucking love this guy. Bro I love you

FastdounutTV

@tajuara100 why wouldnt they? this stuff has to get paid for somehow. and: you are welcome

patrickjmt

@annie2198 you take the tests, not me : ) so u r the reason!

patrickjmt

13 years later and your video is still saving lives

wonjoung

@jasskarn666 i could not eat the whole thing

patrickjmt

i think you have to know multiple methods to plot these polar curves i dont think there is one best way...

dildobaggins

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