Calculus - The quotient rule for derivatives

[audreyfrey]

my teacher taught me to remember it to the tune of 'row, row, row your boat' and it helps immensely! low low low dee high minus high dee low, over the over the over the over the square of what's below! :)

[jamesrosati-brown]

I’ve been coming back to this video since pre calc/calc in highschool. I’m now a junior in college and I can’t remember the formula. You have no idea how grateful I am for your video.

[prithvib]

This is the way I was taught the quotient rule. I love it because it rhymes:"low, low, low, d high minus high d low, square the bottom, not the top, that's the way it goes"

[samya]

Seriously your videos are helpful! If I pass it's because of you!

[nickle]

I hate when you skip the simplifying steps. I need help with both and you could easily extend the video by just a little and would do wonders for me.

[amirghiam]

Got a midterm in about 4 hours, this is really helping me remember stuff. I LOVE

[ingeniousloovus]

At first i also confused while watching above video at 4:55 than i scroll down to find answer i found that many other have confused too so i looked up again very closely and Wallah find the logic he get the common x(xe^x-2e^x)/x^4 and than cancelled it with single x in denominator and get xe^x-2e^x/x^3 ;D simple :D

[animatedmeat]

e^x(x-2)/x^3 looks better to me but either way is correct.

[nasiybayahya]

thank you very much you're the prefect

[Joesusas]

about the signs in the last problem im getting confuse. - (1-x^2)(3x^2) should be -3x^2 - 3x^4 right?

[lukemax]

My prof told us not to simplify on our midterm and quizzes unless specified. Maybe watch for that as he said some markers may take marks off when they see u doing that often when not specified

[jdcreep]

so there's no need to use the chain rule on the (x^2)^2?

[binzsta]

For the last problem how come you didn't simplify the denominator?

[muhammadellahiellahi]

In first Question why e^x is not being cancelled with e^x while X^2 being cancelled with X.

[matthewsattam]

Thanks! Great refresher. And I like your memorization technique!

[Cheeks]

this refresher has really helped, thanks a lot!!

[techducation]

can we do this directly in calculator fx-991

[dranreb]

I'm confused. In the first example, in simplifying the final answer, why the 2x was also cancelled and the denominator turns into x^3?

[marceltogumagoma]

I'm still having problems with the quotient rule sir. Especially with this kind of functions sir, y=sqaure root of x/x^3 + 1. Any clarifications would be highly appreciated. Thanks.

[fieryjack]

hi, in the first example could you simplify more by factoring out the e^x? so e^x(x-2)/x^3 Great tutorials thanks