MOST REQUESTED CHEN LU PROBLEM!!!

Today is the day! We will check the answer to the integral of cube root of tan(x) by differentiation. HAPPY NEW YEAR!!!!

He also did the derivative!!! Check out Fematika's
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blackpenredpen | 曹老師

[blackpenredpen]

Happy New Year Everyone!

Thank you for an amazing year 2018 and we finished with a total of 193, 975 subscribers!
Our goal is to reach 400, 000 subscribers by the end of this year! You can help by sharing, liking and subscribing! Thank you!

Also, reply and let me know what your biggest new year goal is and I may feature your reply in my future video!

Thanks
1/(1-x)

[abdulrhmanfenoun]

10:25 when you take 20 min to solve one integral in the exam and you can’t find your answer in the choices

[aswinibanerjee]

Now integrate it again to check the answer

[KelfranGt]

10:29 blackpenredpen.exe has stopped working

[gastuvi]

10:30 When you review your math exam and think for a brief moment that you made some mistake

[jimnewton]

my heart also skipped a beat when you ended up with tan^(1/3) in the denominator. Great job.

[quiveror]

I accidentally hold my breath when you paused on at 10:28

[victorpaesplinio]

10:28

The time you are finishing your homework but become afraid of have did a mistake and need to restart all over

[angelmendez-rivera]

You should use the limit definition of the derivative in your next video to prove this. Also, though, you most definitely should prove the Riemann hypothesis in your next video too :) Happy New Year!

[adamknapp]

I aced my calc 1 exam by learning from your channel. Im never going to stop learning because you’ve shown how fun math really can be. Keep it up!

[derrickblack]

This is my new favorite channel. You are a GREAT teacher

[Jacob-uyox]

After a long long time, my life is completed now..

[xCorvusx]

It is really neat how in this video, you exactly undo the integration step by step.

The logical conclusion is that not only are there innocent looking functions with complicated derivatives, but also insane looking functions with really simple derivatives.
Interesting shift of perspective, thanks for the video.
Happy New Year :)

[lordofcastamere]

Should have done it by the definition of the derative. Happy newyear BPRP

[jacobcornelius]

I’m watching 4 years later. It’s nice to see that your 400k goal was far surpassed. I love your videos. I haven’t done calculus in over 10 years and I’ve forgotten most of it. But it’s still nice to see these videos. I’d like to learn calculus again because you’re taking a lot of knowledge for granted that I have a vague memory of.

[ckitani]

I've never seen you being this happy. I almost cry of joyness :') Happy (late) new year!

[YourPhysicsSimulator]

Now integrate the result of the integral of tan^(1/3)x

[NWSCS]

I loved how you used that substitution to take what would have been a hideous algebra nightmare and made it elegant and simple. Your videos provide me with hours of learning and entertainment!

[bensolomons]

Nicely done! Really satisfying to see things that look similar to the partial fractions from last time to tell you you’re on the right track!

[kaistrandskov]

You always choose really interesting and satisfying problems. And, thank you for demonstrating the chain rule this way!