Descartes' Rule of Signs

Descartes' Rule of Signs.
In this video, I discuss what Descartes Rules of Signs says, and then do a short example, and two longer examples using it!
For more free math videos, visit http://PatrickJMT.com

Category:

Education

Tags:

• math
• help
• algebra
• descartes
• rule
• of
• signs
• postive
• negative
• real
• roots
• possible
• number

[Lucerozeus]

thx this will come in handy on tomorrow's test

[patrickJMT]

@Lucerozeus good luck!

[HeIsTheStig]

Thank you, so much :,D

You are an inspiration to us all!

I am definitely sharing your videos with my classmates tomorrow, right after acing my last test of the semester! (Hopefully)

[patrickJMT]

@HeIsTheStig thanks for sharing with your friends!

[sackTizzle]

you didnt cover imaginary solutions...

[patrickJMT]

@sackTizzle neither did you

[BugJasmine]

Thank you so much![:

It's amazing how so many people just give up in classes because they don't understand.

Whether I have missed a class, was not paying attention, or just didn't understand, I always come on youtube and search.

Helped me alot! Thanks again[:

[indiyannajones]

thanks for saving my butt for my test in 15 mins! YOUR MY HERO!

[devinekralc]

What my teacher taught me as far as the P(-x) and finding the number of times the sign changes is you can just look at the odd exponents like 2x^5 and -3x and change their signs, so it would me -2x^5 and 3x. But over all this video explained this concept better than my teacher. thank you :)

[EpicRPGRemixes]

Hey, you're left-handed like me! :D

Thanks for the vid!

[bravething2011]

thank so much sir!!

[alphamale442]

Hmm, I think I can apply that basic concept to finding the nature of the roots, however there's only 1 sign change which is at the front of the first variable.

[xHaruu]

Thanks OTL you are more helpful than my teacher who loves to shortcut her lessons based on a bunch of books.

[Tormentlove1]

لقد ضقت ذرعا لم أفهم شيئا