Calculus: Derivatives 4

[ahmadshahroz94]

what an amazing job done by U Sir, i love it

[sereno093088]

Thank you so much for this I was having a hard time in class with it.

[TheJhon980]

thank you so much for your help..

the concept is clear and precise.

i deeply appreciate your help.

Thank you so much.

[bsb1387]

I wish he was my math teacher! If he was I would be getting a great mark right now.

[aparrotslife]

I am very grateful that he's posted this absolutely helpful video...thanks a million! :)

[sentalus]

thanks alot

[jfshields1221]

how anoying is the way he says se-cant? bloody american

[ianharwood]

hey how does it feel knowing that american-english has taken precedence over your own english? guess it goes to show you who the world respects more.

[righteousgroove]

American-English HAS NOT taken precedence over any other kind of English! I'm not trying to be rude, but I find that very ignorant. Love From, Canada

Oh and I like this math video :)

[ianharwood]

@righteousgroove i was responding to jfshields1221 who said, "how anoying is the way he says se-cant? bloody american." are you allowed to be offended, where i'm not?

[righteousgroove]

@ianharwood No, you have a right to be offended- the guy was being a douche! It's just that I found your comment about "American-English taking precedence" to be erroneous. And to be entirely truthful, Americans ARE NOT respected around the world- everyone knows that. Im not hating on Americans (after all, Canadians really arent that different!) its just that as an American, you obviously dont have a good idea of where Americans stand on a world view.

[ianharwood]

@righteousgroove i'll put it to you this way: if you live in canada, how many television shows have casts with predominately american-english-accented actors"? it's going to be the vast majority. it's pretty much the same worldwide. and it's mostly the "youth" of the world that has a problem with america. the older generations are capable of separating jealousy from hate. younger generations, not so much. i do have a good idea of how the world perceives america. i onlywanted to piss that guy off

[righteousgroove]

@ianharwood Yes that's definitely true...most of the shows Canadians watch are American :) I'm not entirely sure what you mean by "separating jealousy from hate", but ok. Kudos to you.

[ianharwood]

@righteousgroove i will admit, i love canadian music though ;). stabilo, billy talent, die mannequin, rush... canada has some awesome bands :D. take care :)

[righteousgroove]

Hey you too man :) Peace.

[Menacin]

He always refers to a book in most of his vids.

What book is he talking about??

thank you

[pokerguy17]

@Menacin

He's talking about the textbook that you're using, if you're taking a class in this.

[UltraMaXAtAXX]

When we says "the book," he refers to the book that you use for your calculus course. Publishers use different answers for problems than others. I'm only a high school sophomore, but I do know that my school's AP Calculus book will give some answers different to a college calculus book.

[Honolo12345]

VERY NICE GUY NO DOUBT

[lamtartarus]

MAN I LOVE THIS GUY. btw, how do you derive the derivative of y = sinx? would make life even easier for me if i understood all concepts

[MISTofDAN]

@lamtartarus To find the derivative of sin(x) draw a sin(x) curve on a graph and label the radians. Draw a line through pi/2 and look what trig curve it makes. You see it makes cos(x).

For cos(x) do the same thing. Now you should see it as -sin(x).

I heard there is a way to do it with algebra but I have not got that far or I would have helped even further.

[sullivanseven]

Even though you are the father of jack in Lost, you teach veeeeeeeeeery good :)

[abdullahkiran1993]

lol

[BYMYSYD]

Only left audio channel.. Sounds weird from whaching the other videos with head phones.

[Warphaker]

I wish I had you as my proff :(

[solexgirl12]

Why do you use the product rule on #3 again?

[lilfonsi]

because its

(t) * Cos(t)

[NJMetsHero]

I just started Calc II after 3 months off for the summer, couldn't remember anything. Thank you for knocking out the cob webs.

[Tri3dgE027]

Kudos to you sir!

You greatly helped me to understand my DiffCal!

Now I'm sure to pass engineering!

[timmee2891]

i understand you saying that you should cross refence your answer with the back of the book because of several possible answers, but how is that going to help in the hsc

[pickpoche]

What he means is that depending on the book, there will be different ways to write the answer. After matching it once, you will then know how to match the rest of the answers without looking at the end of the book.

[greencoveredbridge]

This is a huge help. Where are schools that have teachers like this? You wouldn't believe my class...nothing is explained.

[MYOWNWITCHKING]

yeah , they say this all the time :P

[mrchow38]

OMG SOOO MUCH HELP

[berner316]

a lot less people would hate math if this guy taught everyone....

[souljahbeat01]

@berner316 i agree :) it depends on the teacher whether we'll like math or not. i hate math before coz my teachers are boring and she cant explain math well.

[swamis1surfer]

goes to show a smile helps a lot

[JahLoveUnderground]

i cant hear anything?

[jindassasin]

his face is just so warm and welcoming, hes like santa except kick ass I LOVE THIS GUY no homo of course

[FirajaNinja]

I LOVE EVERYONE THATS COMMENTING SAYING THEY ARE SAVED FROM THEIR EXAMINATION SO MANY MINUTES BEFORE THEY HAVE TO DO IT!!! Woot!

[fouzan91]

whew...n i thought math is gay.....

i guess its my teacher who's gay....

[ma3828]

you are a pro

[Alainarw89]

these videos ROCK! YOU ROCK! Whoever this guys is and whoever posted these videos ROCKS!

[rryking]

yo, i love this n!**a son!!

[meltinginside521]

YAY I might not fail my exam tomorrow!!

[Thrawst]

zomg he came out of nowhere in the opening!

[SPBigJoe]

I wish I would have found this guy before my midterm

[SnoopyDaDog]

why is learning maths with you so fun? guess my teacher is boring?

[Ns2003]

you are awesome! I wish my calculus teacher was half as good as you.

[cutegual]

Awesome! Very simple  Thanks alot

[skybluedancer7]

thank you so much for these videos! I'm trying to study for my final tomorrow, and I needed a review session badly on derivatives! It's helping me a lot! Thank you!!!

[plmihbyfcrszw]

This is a godsend.

[Chen2012]

This makes a great quick review for my upcoming test!

[sidleinad]

you are a great teacher.

[vankalman]

awesome explanations! you were born to teach

[picksup]

you r really kool.......wow i like how u teach!!

[illusion8787]

this guy is so awesome! best teacher!

[LoseYourseIf]

My teacher sucks so much at teaching -_-

[johnnysurefire]

Seriously, such a good teacher.

[killabanana84]

i wish this guy was my calc teacher!

[sajeeshd]

Same.

[greenknight75]

thanks

[GoldAK47]

I hate trig identities. There are a million of them.

Thanks though!

[calculus100]

Very good.

[2Luke]

thanks! very much.