More Complicated Derivative Examples

Cat93Meschia Says:

Aug 28, 2011 - why did you only apply the chain rule to x^3 and not sec^x(x^3) as a whole?

TheNumber2Pencil546 Says:

Aug 29, 2011 - that buzzing sound is awful haha. good video as always though patrick

patrickJMT Says:

Aug 30, 2011 - sorry! a few videos have some audio issues. this was made about 3 years ago, so it was an early one ; )

RAT4T4T Says:

Sep 28, 2011 - I'll be back tomorrow to let you know how my calc test over this went haha. Your vids helped a lot in getting me through the study guide, so thank you!

patrickJMT Says:

Sep 28, 2011 - good luck!

hozaid10n Says:

Oct 3, 2011 - Oddly enough example two is the exact problem I was having trouble with.

VegasBabeXOXO Says:

Oct 5, 2011 - your soooo amazing!! i dont even need sound you explain it just how i needed to understand it!!

SynpaticInc Says:

Oct 9, 2011 - People let's not complain. Patrick's taking the time to really break down these complicated concepts for us--for free too! If he makes a small error, don't spaz, watch the video again. It will all make sense in the end. He's a brilliant teacher--let's not take him for granted. :)

dabears673 Says:

Oct 11, 2011 - thank you! very informative and helpful

vadersdemise93 Says:

Oct 12, 2011 - @PatrickJMTI love your videos! I am wondering, are you using Stewart Calculus 6th edition? Because some of the problems are exact copies ( which is awesome because we are using this book for the semester).

ejsg34 Says:

Oct 20, 2011 - Hello Patric, I`m sorry but I think you made a mistake by writing tan(x^4) to tan(x^3) in second line.

stellar987654321 Says:

Nov 6, 2011 - in this video, in the first example you do the chain rule to get sec^2(x^3)(3x^2)how come you dont do the product rule to get sec^2(x^3)+ tan(3x^2)???

patrickJMT Says:

Nov 7, 2011 - cause tan(x^3) is a composition and not a product. if it was [tan(x)] (x^3), THEN you would use the product rule. this is why teachers get upset if one just writes sin or cos... it does not mean anything.

miketh6 Says:

Nov 29, 2011 - 08:04 1/x.... isnt it just logx???

THEJAXZ80 Says:

Dec 14, 2011 - You made my mind sad. :(

patrickJMT Says:

Dec 16, 2011 - welcome to life

nomnom112 Says:

Dec 20, 2011 - it actually looks like the mistake is in the question itself. He writes tan(x^4) by mistake and then unknowingly makes the correction tan(x^3) in the second line because he's so used to doing similar problems.

coolbeans558 Says:

Feb 17, 2012 - I cannot thank you enough for these videos. You just saved me from getting an F on my calculus test tomorrow. :)

patrickJMT Says:

Feb 17, 2012 - hope it goes well :)

barneel0verz Says:

Mar 22, 2012 - thanks again patrick! although there is an annoying screeching noise in this video

Totallyhip30s Says:

May 5, 2012 - How did you get from tan x^4 to tan x^3?

MrJovipimp Says:

May 16, 2012 - Definitely a better teacher than my college calc professor. god bless you my dude

AsianAdvil Says:

May 20, 2012 - No. 1/x is the integral of lnx if that's what you were thinking.

ThePharmacistRx Says:

May 20, 2012 - I flunked calculus in high school and university and I still got into med school.

infinity936 Says:

May 29, 2012 - hey patrick, thnx for all the lessons.... but in this video, i think u made a mistake in step 2 where you wrote tanx^3 instead of tanx^4, if im wrong, please leme know!!! cheers!! n a great many thanks!!!! :)