Direct Comparison Test for ( Improper ) Integrals

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  • เผยแพร่เมื่อ 18 ธ.ค. 2024

ความคิดเห็น • 138

  • @SentinelPrimek
    @SentinelPrimek 10 ปีที่แล้ว +142

    So beautiful, I shed some man tears.

    • @TheReck12
      @TheReck12 3 ปีที่แล้ว +1

      honestly, he makes it so simple

  • @rubyd2380
    @rubyd2380 9 ปีที่แล้ว +133

    Thank you so much!!! Got a 98 on my calculus exam because of you! :)

    • @patrickjmt
      @patrickjmt  9 ปีที่แล้ว +250

      +Ruby d nah, you got a 98 cause of YOU! :)

    • @HK-sw3vi
      @HK-sw3vi 6 ปีที่แล้ว +42

      out of 300?

    • @blooberization
      @blooberization 6 ปีที่แล้ว +3

      @@HK-sw3vi lol

    • @pitt8221
      @pitt8221 5 ปีที่แล้ว +1

      @@HK-sw3vi 😂

  • @hassaanasif8879
    @hassaanasif8879 10 ปีที่แล้ว +43

    He draws those infinity signs so perfectly...

  • @EmosewaChan
    @EmosewaChan 8 ปีที่แล้ว +15

    The paint analogy is adorable! Thank you so much, this definitely cleared things up :')

  • @AJalriyadh
    @AJalriyadh 12 ปีที่แล้ว

    dude, you should never stop these lessons!! I am taking CALC II and two days ago when you didn't have this video uploaded on you tube, i was searching for videos that explain this principle, found some, but couldn't really get a clear Idea out of it! but now i can say i really get it all! ...

  • @mushupork1988
    @mushupork1988 12 ปีที่แล้ว +1

    The day you post this vid is also the same time i have an upcoming calc 2 exam on this stuff. THANK YOU SO MUCH! :)

  • @Tager253
    @Tager253 9 ปีที่แล้ว +33

    watch the exam im going to take in an hour have the worst improper integral to compare but thanks i understand this now

    • @david_handlebar
      @david_handlebar 6 ปีที่แล้ว +2

      How'd it go?

    • @sleepy.philly
      @sleepy.philly 5 ปีที่แล้ว +9

      @@david_handlebar i think he died taking the test :(

    • @BtsEndedYallsFavs
      @BtsEndedYallsFavs 8 หลายเดือนก่อน

      ​@@sleepy.philly💀💀

  • @kut240
    @kut240 2 ปีที่แล้ว +1

    i watched a couple videos about this subject but this video is definitely the one that helped me understand it. thank you.

  • @maryyyaaaam
    @maryyyaaaam 11 ปีที่แล้ว

    You have helped me more than you will ever know, Patrick! You have the absolute BEST math tutorial videos out there!! Thank you SO VERY MUCH!

  • @sjard97
    @sjard97 8 ปีที่แล้ว +3

    I've been watching your vids since high school, thanks a lot!!!!!

  • @mitchostrenga7964
    @mitchostrenga7964 10 ปีที่แล้ว +3

    Your explanations are perfect, I understand them after one play through. Thank you!

  • @thinnairr
    @thinnairr 12 ปีที่แล้ว

    Great video! Makes sense to one who isn't even taking Calc right now.

  • @sharifabahar6257
    @sharifabahar6257 9 ปีที่แล้ว

    Really Excellent . This is a series of classes with great mathematician , Patrick and his nice videos to continue my life and improve my math ...

  • @nodustollens9183
    @nodustollens9183 5 ปีที่แล้ว

    my calc professor barely explained this and this took less time and made more sense than what she said. thank you

  • @taranjitkaur125
    @taranjitkaur125 8 ปีที่แล้ว +1

    You deserve many subscribers. Thank you so much!

  • @Ariellapowers
    @Ariellapowers 12 ปีที่แล้ว

    Just found your videos today. I wish I could have watched this last week. This would have helped me a lot in my AP calculus class

  • @musdhafaraabi4319
    @musdhafaraabi4319 8 ปีที่แล้ว

    thanks patrickJmt u are my best teacher...

  • @ieshabush32
    @ieshabush32 9 ปีที่แล้ว +44

    Khan Academy should hire you

    • @arjay_2002
      @arjay_2002 3 ปีที่แล้ว

      Nah, he should hire KA

  • @jonahtang
    @jonahtang 12 ปีที่แล้ว +1

    Lol what are the odds. I have a test on this tomorrow.

  • @hakangungor4743
    @hakangungor4743 6 ปีที่แล้ว +2

    I dont understand how x^4 out x^3 at 3:27

    • @squidwardc6867
      @squidwardc6867 5 ปีที่แล้ว

      Because it is x^6, looks like x^4 to me at first

    • @lairoubarry
      @lairoubarry 5 ปีที่แล้ว

      The square root takes 2

  • @tiannurulhanipah7750
    @tiannurulhanipah7750 4 ปีที่แล้ว

    your videos are just very helpful! thank you so much!!

  • @BangMaster96
    @BangMaster96 9 ปีที่แล้ว +7

    Where have you been all my life. I wish you were my Math teacher. You explain so well.
    God Bless Whoever gave birth to a mathematician like you.
    God please screw and fuk up my shitty math teacher though

  • @andreaskaresiou2349
    @andreaskaresiou2349 3 ปีที่แล้ว

    congrats my friend for the amazing explanation!

  • @AJalriyadh
    @AJalriyadh 12 ปีที่แล้ว

    another thing is that i am an Electrical Engineer major and as you probably know i need math to be my primary tool. It would be a great help if you'd upload some videos explaining how to deal with graphs, calculating averages by integrations and and sketching graphs based on points in them ... thank you

  • @brucelee7150
    @brucelee7150 11 ปีที่แล้ว +1

    i know an engineer who says that he never used calculus in his career because they have computer software that does all this math for you, but he does use physics alot

  • @gavinhaugen
    @gavinhaugen 11 ปีที่แล้ว

    You explained this very well. Thank you!

  • @spam2094
    @spam2094 12 ปีที่แล้ว

    I'm taking A-level maths, doing C4 now but never done anything like this (guessing this is degree level?). But anyway, i completely understand this, really well explained and interesting! Thanks :D

  • @sabihashafqat5496
    @sabihashafqat5496 2 ปีที่แล้ว

    How do we understand which method is used either limit comparison or direct comparison??

  • @ManojManoj-kt7es
    @ManojManoj-kt7es 5 ปีที่แล้ว

    very nice lecture sir,thank you very much.

  • @yoxiyogaming
    @yoxiyogaming 9 ปีที่แล้ว

    for comparison test, the logic seems to be the opposite for series right? if the smaller series diverges, the the bigger series also diverges. if the bigger series converges, then the smaller series also converge?

  • @playajaj5
    @playajaj5 8 ปีที่แล้ว +2

    how is square root of 6 equal to 3? i don't understand that part

    • @patrickjmt
      @patrickjmt  8 ปีที่แล้ว +5

      it doesnt

    • @TheByronClaw
      @TheByronClaw 8 ปีที่แล้ว +1

      the square root of x^6 is x^3 because the square root of a number is n^1/2. so the square root of x^6 becomes (x^6)^1/2 which is x^6/2 which is x^3

    • @playajaj5
      @playajaj5 8 ปีที่แล้ว

      okay i see it, thank you.

    • @R3_dacted0
      @R3_dacted0 6 ปีที่แล้ว

      With these types of questions, it's easiest just to plug in a random number into your variable and check for yourself.
      So, you're trying to figure out why The square root of x^6 = x^3.
      Lets just say x = 2.
      2^6 = 64
      2^3 = 8
      The square root of 64 is 8.
      Therefore: The square root of 2^6 = 2^3.

    • @nunyabeezwaxx4586
      @nunyabeezwaxx4586 6 ปีที่แล้ว

      Yo it’s easy.. the denominator of a power is the degree the square root is taken.. x^(1/2) is the square root of x.. x^(3/5) is the fifth root of x^3. Simple.

  • @Tylemaker19
    @Tylemaker19 10 ปีที่แล้ว +12

    Final Exam tomorrow. This is the one thing that I just can NEVER get right. I'm so bad at it

  • @thatoleping8673
    @thatoleping8673 9 ปีที่แล้ว

    you are the best, you are a life saver

  • @laurenmartin5628
    @laurenmartin5628 11 ปีที่แล้ว

    Good sir, YOU ARE MY HERO!

  • @houseofthewinter1427
    @houseofthewinter1427 2 ปีที่แล้ว

    Is under root square x raise to power 4 is equal to x raised to power 3???

  • @erickherrmann5943
    @erickherrmann5943 6 ปีที่แล้ว

    But I dont understand, if P = 1, as x gets larger then P comes closer to zero no? thus converges. This would make sense to me if it diverges only if P < 1 and converges if P is > or = to 1 no????

  • @danielcabello5291
    @danielcabello5291 9 ปีที่แล้ว

    Im sorry patrickJMT, but I am confused on which function you are evaluating for convergence, because if it's f(x), shouldn't you find convergence by finding a bigger function of g(x)? The same for divergence, but in the opposite way?

  • @blackmamba24dm
    @blackmamba24dm 8 ปีที่แล้ว

    Hey buddy on that example what if its square root of x^6 -1 on the bottom. What would f(x) have to be?

  • @MrZeSpy
    @MrZeSpy 7 ปีที่แล้ว

    I don't know if anyone still monitors this video, but I was wondering if anyone could help me with a problem. I'm supposed to use the comparison test to prove that the integral from [0,2] for |sec x|/x^2 is divergent or convergent. But since it's not going to infinity, I'm not sure what to do. Any ideas?

  • @atrbulldog5955
    @atrbulldog5955 5 ปีที่แล้ว

    What if you just have a nice problem like x/sqrtx^6 how to do we relate that to something else to prove it’s convergent

  • @pedrohsanchez3624
    @pedrohsanchez3624 9 ปีที่แล้ว +4

    hey do u teach in any university? if u don't u must! u r a great teacher!

  • @18320522
    @18320522 11 ปีที่แล้ว

    bro, you save lives

  • @responsiblefeed414
    @responsiblefeed414 9 ปีที่แล้ว

    This is actually quite similar to the comparison test for series!

  • @sarilarinsuleyman4908
    @sarilarinsuleyman4908 10 ปีที่แล้ว +5

    you are perfectly man.Really you affects me positively.

  • @Madvillian01
    @Madvillian01 11 ปีที่แล้ว

    we need a vid for the Limit Comparison test for improper integrals

  • @zabrinnamariel
    @zabrinnamariel 8 ปีที่แล้ว

    BRILLIANT !!!! THANK YOU SO MUCH :)YOU ARE THE BEST :)

  • @daffodildancer
    @daffodildancer 11 ปีที่แล้ว

    Thanks patrickJMT!

  • @Christiancabp
    @Christiancabp 8 ปีที่แล้ว

    what about if you have a denominator like (x-2)^3/2

  • @MrBlash93
    @MrBlash93 10 ปีที่แล้ว

    Absolutely amazing. Thx u so much

  • @haroldh6678
    @haroldh6678 6 ปีที่แล้ว

    To justify it, can we just find the integral and insert the boundaries to see if its convergant or divergent? Yes right?

  • @gigihe_
    @gigihe_ 7 ปีที่แล้ว

    I finally understand this, thank you so much :')

  • @Omar-sq6zz
    @Omar-sq6zz 6 ปีที่แล้ว

    Perfect explanation

  • @taylorh9200
    @taylorh9200 5 ปีที่แล้ว +5

    Suppose I get a 130% on my test I just might get an A in the class

  • @baris1476
    @baris1476 6 ปีที่แล้ว

    Great video!

  • @ps1569
    @ps1569 4 ปีที่แล้ว +1

    Sqrt(x^4) = x^2
    Not x^3

  • @PutiPino
    @PutiPino 12 ปีที่แล้ว

    Thank god you uploaded this, I have a quiz on this in an hour.. Thank God it's only a quiz....

  • @methanepasbara9978
    @methanepasbara9978 11 ปีที่แล้ว

    wow.Great job.Keep it up!!!

  • @ThePrimeChannel780
    @ThePrimeChannel780 5 ปีที่แล้ว

    how do we find the limit it converges at?

  • @ChelseaTaylore
    @ChelseaTaylore 11 ปีที่แล้ว

    do you have a website, other than youtube? not really related, I tutor as well and am curious :P.

  • @ayushjoshi9103
    @ayushjoshi9103 6 ปีที่แล้ว

    Nice explaination

  • @onur-i0x
    @onur-i0x ปีที่แล้ว

    great video for sum up

  • @christineebdalin6733
    @christineebdalin6733 3 ปีที่แล้ว

    What if the answer is π/8, is it still convergent?

  • @awalwema
    @awalwema 11 ปีที่แล้ว

    Bravo my friend!

  • @jorgewen5098
    @jorgewen5098 10 ปีที่แล้ว

    many thanks!

  • @1998Ayham
    @1998Ayham 12 ปีที่แล้ว

    can you make some Analytical Mechanics Videos??? PLEASE!

  • @neoseeker02
    @neoseeker02 8 ปีที่แล้ว

    convergence/divergence is lit

  • @sabrinaletlat5450
    @sabrinaletlat5450 8 ปีที่แล้ว +1

    thanks a lot

  • @DevveDiamond
    @DevveDiamond 8 ปีที่แล้ว +1

    Thank you very much for your detailed yet simple to follow tutorials ! I've just downloaded a bunch of PDF's with problems and solutions from you at www.teacherspayteachers.com and it looks great, just what I need to understand and pass my calculus course. Thanks again...

  • @falubii9712
    @falubii9712 11 ปีที่แล้ว

    It's true over the interval (1,infinity).

  • @tauceti8341
    @tauceti8341 10 ปีที่แล้ว +1

    I dislike that, tell me what function. My book just "seems" to randomly cut of pieces of the function. Of course its logical, but it would be kind if they told the logic behind it.

    • @Tylemaker19
      @Tylemaker19 10 ปีที่แล้ว +1

      completely agree. I can NEVER find the right function to compare it too

  • @engineer271
    @engineer271 10 ปีที่แล้ว

    very good my friend . nice one

  • @jakehopper930
    @jakehopper930 11 ปีที่แล้ว

    Is this video sped up?

    • @citats
      @citats 10 ปีที่แล้ว

      Heroin is a hell of a drug.

    • @jakehopper930
      @jakehopper930 10 ปีที่แล้ว

      I'm Rick James bitch.

    • @patrickjmt
      @patrickjmt  10 ปีที่แล้ว +16

      Jake Hopper actually, in that episode, he said cocaine is a hell of a drug, not heroin.

    • @jakehopper930
      @jakehopper930 10 ปีที่แล้ว +2

      lol! are you implying something Patrick? haha jk love your vids man!

  • @Madara2010X
    @Madara2010X 11 ปีที่แล้ว

    very clear

  • @WinnfieldCustoms
    @WinnfieldCustoms 11 ปีที่แล้ว

    thanks

  • @izzahahmad2157
    @izzahahmad2157 7 ปีที่แล้ว

    bless you

  • @상돌주맙
    @상돌주맙 5 ปีที่แล้ว +1

    love from south koreaaaaaa xD

  • @ASwannyOne
    @ASwannyOne 7 ปีที่แล้ว

    Okay but how do you do this with a sin function question? haha

  • @thembekileshato6243
    @thembekileshato6243 11 ปีที่แล้ว

    6:14 That's not necessarily >=0, so you haven't actually proved it converges... imo

  • @pazzisvillanueva890
    @pazzisvillanueva890 7 ปีที่แล้ว

    you should teach physics

  • @musdhafaraabi4319
    @musdhafaraabi4319 8 ปีที่แล้ว

    once more thanks

  • @florenceemuze8958
    @florenceemuze8958 4 ปีที่แล้ว

    Not me having an exam in an hour or so

  • @akshaylimba9405
    @akshaylimba9405 6 ปีที่แล้ว

    This ia very goos video

  • @kristinscott94
    @kristinscott94 11 ปีที่แล้ว +1

    Thank you math Jesus

  • @star171194
    @star171194 11 ปีที่แล้ว

    Why does everyone has to ruin the caps of poor sharpie :(
    Anyways awesome explanation.. :)

  • @DMomsFan1
    @DMomsFan1 9 ปีที่แล้ว

    can you be a uni prof at my school?!?!?

  • @sunsongynaffit
    @sunsongynaffit 6 ปีที่แล้ว

    thank you ;n;

  • @فاطمةأحمد-ش3ي
    @فاطمةأحمد-ش3ي 8 ปีที่แล้ว

    رائع

  • @jehan9986
    @jehan9986 6 ปีที่แล้ว

    like for the handwriting

  • @jordangagne9445
    @jordangagne9445 12 ปีที่แล้ว

    this is calc 2

  • @athanasioskougionis2507
    @athanasioskougionis2507 7 ปีที่แล้ว

    If x over square root of x^4 is 1/x^2 and not 1/x I'm superman( WATCH AND CORRECT CALCULATIONS IN 7.37). I come here to understand better the comparison test and all I get is a guy that does not know how to do basic calculations.

    • @dennercassio
      @dennercassio 7 ปีที่แล้ว

      I thought it was 4 just like you did. But it´s 6 actually !

  • @vitaliinykyforenko415
    @vitaliinykyforenko415 5 ปีที่แล้ว

    ЛУЧШИЙ!!! красава!!!!

  • @hr.sharif0933
    @hr.sharif0933 5 ปีที่แล้ว

    I think,,,Your teaching method is so Shortcut... Plz discuss elaborately...

  • @eyosiaswhawariat6536
    @eyosiaswhawariat6536 5 ปีที่แล้ว

    just keep on bruh

  • @SPOOKSTR
    @SPOOKSTR 10 ปีที่แล้ว

    How the hell did i end up here? 3x 2 = 6.

  • @markusrichard521
    @markusrichard521 5 ปีที่แล้ว

    Hes left handed, no wonder he smart

  • @stefanscrazyworld
    @stefanscrazyworld 10 ปีที่แล้ว

    GOD

  • @omerfarukyazici2035
    @omerfarukyazici2035 6 ปีที่แล้ว

    O ne biçim 6 lan. 4 gibi

  • @vinitamoholkar4714
    @vinitamoholkar4714 6 ปีที่แล้ว

    I not understand

  • @rudodzvore4011
    @rudodzvore4011 8 ปีที่แล้ว

    gud stuff

  • @stuffandthangs2595
    @stuffandthangs2595 5 ปีที่แล้ว

    You implore me???