Definite Integral With U-Substitution 

I haven't looked at an integral problem for at least three decades. Your explanation is beautiful...it's all coming back!

This man's handwriting is mesmerizing. Love the mise-en-place approach here when setting up the u-substitution!

You explained everything so well. And, a soothing voice and great penmanship. Thank you, very much!

Love the energy! Keep up the great content!

I love your enthusiasm and energy! Thank you for making this topic fun.

You are an outstanding citizen. Loving the positive Calc vibes. Cheers!

I did trig substitution instead, and I got to integrate 48 tan³(x) sec(x) from zero to arctan((sqrt5)/2), which equals 14. I got the right answer!

Your explanations are flawless

Finally, a breakdown I could follow. Thank you!

This one problem has all the areas one needs to know of how to calculate a definite integral by substitution. Definitely it's a great example. 👍

This was so helpful. Please keep making videos like that!

Sir, you really helped me a lot with this lesson thank youu

Wow! A real tour de force! Bravo, sir! 🙂

Brilliant video, it helps me understand a lot!

Great video. So easy to listen to. Presentation is done well.

The most amazing thing about this video isn't the calculus; it's the mental arithmetic!

I was able to understand the lesson very well. Thank you for this!! I hope you still keep on making videos like this :)

This helped so much. Thank you sir.

Legend! Thanks for the video 🔥

you choose the perfect problems..this is harder thaan usually what other videos solve

this helped sm thank you!

So helpful, thank you so much!

My goddd! Thank you sir! You're a big help❤️

amazing! helped me a lot

Thank you sir. It really helped me

Great submission

great video thank you

Nice explanation love from INDIA

You're good man

i love this guy so much❤❤.

Helping me with my upcoming exam! thanks.

Wow genial, explicado cada detalle

Damnn math teacher with a rizz thanks alot sirr!!!

bro is the goat

Great content. Curious question, in the prep stage is it wrong to simplify the numerator ((U-36)/3) to just (U-12)?

Thank you very much

Excellently brilliant. Thanks!

THANK YOU

This helped so much, thank you sir.

legend

Looking Really cool here

At 3:22 why and how did you just drop the 3 to the denominator?

How do you keep that blackboard so clean?! *love!*

Thank you so much, you helped clear my question, I appreciate it. also, are you Nigerian?

Swag outfits man...thanks for this

love my uso😍

What’s the intro song?

do i need to recalculate the boundary every time when i use U substitution?

Well done

Can we solve this integral in the form of limitation of Riemann sum?

Sir you're too good✅

3:22 I don’t understand why we rearrange it like that?

Lol I got 50 and I don’t know where I went wrong. I did it a bit more complicated, I did a t = sqrt(u) substitution and then I substituted the resulting integral all the way back to x before applying 0 and 15

good luckk broo.. im come backk!!

❤

This guy is funny

We can solve by barts

The are not visible try to increase light in your working place

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