Factorials - Evaluating Factorials! Basic Info

[GARDENERSTOES]

!xobile :D AHAHAHAHAHA russel peters <3

[kochikame82]

Dear sir patrick, thanks for sharing with us your maths knowledge. There are 5 fields in maths (if i'm not mistaken) which are, geometry, calculus, statistics, trigonometry & algebra. You seems like you mastered all the 5 fields! Thumbs UP! (coz some people like calculus, but they don't like statistics)

[teknoboy420]

this is saving me for my contemporary math class thank you!!

[limpbits]

going off on a tangent here lol but how do you prove 1+1=2?

[SlyHeist]

You sir, are king...

[Kateosaurus]

If I pass STATS 104 I will name my firstborn son after you ;)

[patrickJMT]

@Kateosaurus patrickJMT!

[Kateosaurus]

@patrickJMT patrickJMT jr. ha ha :P

[patrickJMT]

@Kateosaurus : )

[mazter101]

omg...if only my Algebra 2 teacher taught like you i would have passed the class last semester!!! now im making up those credits in math applications :/

[bell1192]

thank you so much, you really are a fantastic teacher. I have learned more from your videos in 2hours than i have in 30 hours of math class!!

[SpiritMan00]

thanks for the video... I suck at probability and all statistics.. but need it to pass one of my papers... cheers...

[XxFightinDirtyxX]

This guy is impressive

[ecartboy]

haha it sounds like he's saying fuck alot

[garfieldmofo]

You sound exactly like the guy that does the thinkwell videos. Like exactly like him. Are you?

[Lostcontroller]

100! is just insane. I think it has more than 100 figures.

[patkaybites]

Heck, why the hell do I got to Math class anyways? My teacher looks like a total scumbag compared to you xD You should be mah teacher, Patrick!

[Morelloo1]

is there any way to do something with a factorial on the other side of an equation eg... x! = 50. Find what x is. Or is that illegal?

[screaminghallelujah6]

What if you have variables? [like (n-2)!/n!] I don't understand how you factor those. My teacher did it in class but she's thick enough to skip the parts she deems as blatantly obvious.

[hpeselyk]

@screaminghallelujah6 is the answer something like (n-1)(n-2) ?

[quantomic1106]

awesome.

[mzsuramericanrocker]

THANKS SO MUCH

[darnur64]

You are an awesome teacher!!!

[FtRapture]

I can't find anywhere that helps solve factorials with a variable :( for example I have (n+2)!/n!

[jnar7]

mkay?

mkay.

Really tho, thanks for the help here, this shnits so confusing trying to learn on an online course...

[FtRapture]

Arg! Please do one with a variable in it

[OZZl3]

How can I evaluate (2n+1)! / (2n + 3)! , the answer is supposed to be 1 / (2n+3)(2n

[titiregens12345]

i know what 62(!) factorial

[WarriorInternationa1]

its so weird to watch a left handed person write lol . good stuff

[HaZaRdxScopeZ]

Why thank you sir. this was quite helpful.

[LadyTomiko]

The last problem, I'm assuming that almost all the numbers are canceled because they are the same except for the (100) multiplied by (99).

Is that correct?

[APlasticTree001]

How about simplifying (3n)! / (3n - 2)!

[NSAS]

thanks

[sheltykiss]

Thank you so much! You really are absolutely the best! Your videos are a lifesaver for GMAT math prep!

[Chino956]

thanks for posting these, youtube is a great tool to learn stuff :)

[rajaninag88]

great...makes one think

[armand0]

heyy youre the best! Im here stuck in a statistics problem and this factorial thing was confusin me. great vid! It makes everything simple!

[theubiquo]

brilliant, so easy to learn!

[ltrejo44]

do you have videos on factorials with n's? such as (3n+1)!/ (3n)!? I have the answer, its 3n+1, but i can't remember how to solve problems with n!. Thank you.

[Gator115]

Thanks for the help

[TheMissKent]

Thank you Patrick! You are the bomb!

[redmnm123]

SO i cant find some one to help me....this is my problem if i have (4/5)^2 how do i solve that?

[patrickJMT]

@redmnm123 not sure what there is to solve...

(4/5)^2 = (4/5)(4/5) = 16/25.

[clark3fam]

Thanks for the demo. it was very helpful!!

[infinatycount1]

what are u are u a scientist engineer or mathematician

[patrickJMT]

@infinatycount1 none of the above. which are you?

[theantagonist114]

@patrickJMT then are you a magician? Because you're basically my Dumbledore for my Voldemort-Calculus.

[TheLaugh2010]

OMG... so glad ur videos are up! you explain it so easy for me to understand. Thank god for you! I love teachers! thanks soooooooooooooooo much! wooohooo

[xsmile007]

Thank you so much for making these videos! I'm in pre calculus right now, and your videos are so insanely helpful.

[flinagin]

I'm very glad i found your videos, you're a great teacher, very easy to understand, i see my self watching a lot of your videos in the future.

Thanks for the effort, much appreciated.

[patrickJMT]

@flinagin thanks for the kind words. glad it helps

[DEEPTI988]

good i know it already

[carjack678]

thanks

[brittlesmile]

Thanks for putting this up. It was really helpful to have a concrete review of how factorials work now that I'm doing things with infinite n! in calculus.

[Angelotarus]

This was very helpful!!!!! Yiou should be everyone's math teacher. You are good at what youdo. Given your teaching style, your students must feel very comfortable as well as encouraged learning from you. You make me want to teach!!!

[patrickJMT]

@Angelotarus become a teacher! the world needs more caring and qualified teachers

[whitemochaaa916]

Thank you!!!

[696Razor696]

Dude your freaking AWESOME!!!

[sweetsdad]

Excellent video. Is it to late for you to come to Myrtle Beach S.C and take my Prob. and Stat. test? lol

[Oblivionplayer12345]

Yeah definately a great tutorial, well spoken and illustrated.

Would you say that just constantly doing lots of questions would imrpove your skill in that area, or is it better to focus on the formulas and logistics behind it?

[96phillies1]

5! x 10! = sombody answer and you will win 1000000000000 dollars

[TheWBarry]

naw!

[powerpuffmay]

thanks! I admire you!

[rosielikesvideos]

And once again you beat my math teacher hands down. Thank you for posting all these videos :D

[patrickJMT]

glad you enjoy my vids : )

[BajanCreation]

@patrickJMT hey man, i just want to say thank you, ive started my BSc in banking and Finance and were doing statistics now, ive been following you instead of my tutor and im seeing wonderful results. Thank you man for all the integrals and derivatives and continue to post man.

[samueld93]

Thank you for bringing your intellect to us that are mathmatically challanged. :)

[patrickJMT]

math is hard for just about everyone (me too) - not all things in life are simple.

keep studying and you will be surprised at how easy it all becomes!! : )

[vampySARAH]

agaaain you save my day !! seems that ur videos always help me to get through each course.. XD yaay

[patrickJMT]

vampy!!! back for more : )

[vampySARAH]

like i always do :p ,, i told my whole class about ur vids LOL XD finals are next week ,, hope we pass that shitty STAT class :/

[minguskhan]

What if you have n! in numerator and (n+1)! in denominator.

n!/(n+1)!

I am trying to learn how factorials simplify in evaluating sequences and series.

What throws me off is the denominator with the factorial outside of the parenthesis.

[suprflat]

i think it may simply to 1/(n+1)

[adaldt]

thank you! maybe now i can pass logic!

[tiailds]

I wish there was a shortcut.

[icedude0077]

please tell me u didnt mentally work out 8x7x6x5x4x3x2x1.

[c8resolution]

Thanks, but still curious,

Why do we use the dot product when dealing with factorials? What's wrong with the cross product?

[ClayTerp]

There is nothing wrong with cross product. I think the dot or ( ) are used more often just to avoid confusion with x as a variable.

[SkyVin09]

dots and cross are the same lol same as the asterisk

[chocoff]

nothing is wrong with the cross product, but generally it is not used in algebra beacuse it can be confused with x

[saryshinobi]

thanks a lot man! I take the pcat on saturday and this helped a lot!

[blakechan09]

Thanks man.

[kimberlymichellemuns]

You are awesome!!!

[jdwolfert]

Your the best dude. Why the heck doesnt' my $1,500 on-line course have this stuff????????

[winasonic]

woahhh this has saved me before my exam in 2 days time :P

Btw, ive seen quite a few vids, that use a dot, instead of the multiplication sign.... is that an american thing? or statistical sign? sorry for the ignorance

[thelastwords]

I don't think it's anything special.

I do it all the time.. it's just like using parentheses but it's easier to write

[PrometheusLoire]

My son and I watched this video and it helped him out quite a bit! You rawk! ^_^

"LOL", my son.

[Cornogirl]

Thank you, thank you, thank you! I am going to view all your other videos. I suddenly don't feel like such a math dunce!

[xholybunniex]

Thank you so much for this.

The simplifying tip really helps.

[cvwelk]

I plug 100!/98! into my TI-84 just to srew around...I got an ERR: Message OVERFLOW.....Thanks for the excellent presentation I definitly helped me out figure out a problem I was stuck on....EXCELENT!!!!!!

[TheDuskMar]

100 x 99 = 9900

[wahdatw]

Partric... tnx so much bro...

[7nick96]

THANK YOU THE BEST. GOD BLESS U

[punisha12]

your diffenenly the man i love you man your a lot of help you should be my teacher i'll pay yeah lol

[tractsfynest]

thanks bro

[boredcow]

THANK YOU! I had a math problem that was 100!/98! and it happened to be here. Im glad you explained it as well.

[patrickJMT]

i read your mind 5 months ago!

[boredcow]

haha yes you did! i'm still working on that quiz that has this problem :P

[limoncello182]

hello, can you explain and prove to me why 0! = 1????

[InTotalCollapsion]

i just use the calculator.

i dont bother to reason it out.

lol

[DrLsw]

the only way i can reason it is because factorials cant be timesd by zero because then every factorial would equal 0. therefore it has to be timesd by 1 because 1 is the lowest number you can factorial without making the answer 0.

i hope this explains it for you

i couldnt figure out how to explain it how i thought it i did the closest i could though

[Nickidewbear]

I just used the method where you can cancel out numbers or variables as well as a calculator.

[pjl3dm]

there's only 1 way to get a 0.

0 * any number = 0

[Nickidewbear]

I guess "0!" is like "n^0 = 1".

[Nandine2]

cool!