Comparison test for improper integrals introduction, calculus 2 tutorial

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  • Опубліковано 24 гру 2024
  • Learn how to use the comparison test to determine if an improper integral converges or not.
    The 3 steps to use the comparison theorem for improper integral: what you know, do the check, and draw the conclusion!
    Check out example 2: • Comparison test for im...
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КОМЕНТАРІ •

  • @kellyychann
    @kellyychann 4 роки тому +64

    I was honestly so confused and trying to learn math online during this pandemic has just been the worst but this was clear and straight to the point. Thank you!!

  • @TheAlternatePlan
    @TheAlternatePlan 4 роки тому +33

    Little does my university know, you are actually my calc 2 teacher

  • @thelazerowl6565
    @thelazerowl6565 3 роки тому +6

    No one explains calc better than this guy. 10/10

  • @nicoleng4181
    @nicoleng4181 3 роки тому +7

    You're insanely helpful , thank you so much . I understand your teaching so much better than my lecturer

  • @masterofnone25
    @masterofnone25 6 років тому +6

    dont think ive ever had a video help me this much. Thanks man, great job.

  • @zeeshansheray5175
    @zeeshansheray5175 7 років тому +21

    Thankyou Dude! It helped me alot. Pray for me because I 'm having my Calculus final terminal. :"D

  • @blackpenredpen
    @blackpenredpen  Рік тому +2

    Check out example 2: ua-cam.com/video/AoH58bERkiU/v-deo.html

  • @akivagoldberg286
    @akivagoldberg286 5 років тому +4

    damn you are one good teacher, keep up the good work!

  • @coolguytoughguy17
    @coolguytoughguy17 2 роки тому

    This video is so informative and helpful! it really helped me on a problem I was stuck on. Thank you!

  • @jasmynethomas5097
    @jasmynethomas5097 3 роки тому

    dude you are so awesome! this makes so much sense! thank u!!!!

  • @sadekjn
    @sadekjn 5 років тому +3

    Instead of cross-multiplying, could you not have just plugged in 1 from the beginning to show that it was true?
    If you did, g(x) = 0 < f(x) = 1/2

  • @kianooshmashayekhi2829
    @kianooshmashayekhi2829 5 років тому +6

    thank you finally learned something out of your thousand videos

  • @ragadb9826
    @ragadb9826 3 роки тому

    Man you are the best.

  • @andreamonteroso8586
    @andreamonteroso8586 5 років тому +1

    youre the best so far

  • @restycomedy1138
    @restycomedy1138 3 роки тому

    such a life saver holy

  • @mr.9754
    @mr.9754 4 роки тому +1

    Really like your videos. Instead of cross multiplying, you could also divide (the original) both numerator and denominator by x^2 which gives:
    1-/x^2 for the numerator
    2x^3 + 3/x + 17/x^2 for the denominator
    So we see that the numerator is smaller and the denominator is bigger so therefore less than 1/2x^3

  • @sugasuga3936
    @sugasuga3936 3 роки тому

    Thank you dude 😇😇😇✌✌

  • @NoobaLV
    @NoobaLV 4 роки тому

    Oh my fucking god ur a saviour. I love listening to your work. Thank you very much for your contribution to all the math noobs

  • @mahmoud1511
    @mahmoud1511 6 років тому +3

    I think using limit comparison test is easier than DCT .... But its really an amazing idea ❤

  • @kejianshi9196
    @kejianshi9196 6 років тому +7

    why we can cross-multiply? It confuses me , someone explains?

    • @krejman
      @krejman 5 років тому +2

      why not? everything is positive

  • @nemrahjanjua5196
    @nemrahjanjua5196 4 роки тому

    Thank you so much. So helpful!

  • @hassanelbardini9597
    @hassanelbardini9597 4 роки тому

    brooo, you rock, you should teach in my school.

  • @SubhamRai5
    @SubhamRai5 4 роки тому

    Thank you it helped me a lot

  • @obo190
    @obo190 4 роки тому +1

    You're going to be the reason coronavirus doesn't cause me to epically fail this semester. Thank you Sir Bpen Rpen. Too bad you don't do Physics videos XD

    • @veehaytch3440
      @veehaytch3440 4 роки тому +1

      the organic chemistry tutor has good physics videos :)

  • @barisballi70
    @barisballi70 4 роки тому

    thank you

  • @ishueducation9195
    @ishueducation9195 2 роки тому

    What happen when the comparison will fales ?

    • @MaharaMsefula
      @MaharaMsefula 9 місяців тому

      It means you've failed intergrating the function

  • @danabanana2195
    @danabanana2195 7 років тому +1

    I enjoyed this

  • @arnoboy96
    @arnoboy96 2 роки тому

    You're the fucking best man

  • @awesometico
    @awesometico 6 років тому +1

    So just like the direct comparison for series?

  • @kevinsweeney2809
    @kevinsweeney2809 6 років тому

    Thank you so much!!!!

  • @OskAug97820
    @OskAug97820 4 роки тому

    thank u so muchh

  • @colt4667
    @colt4667 4 роки тому

    If the integral converges don't you have to find the value of it ?

  • @soner8780
    @soner8780 5 років тому +2

    he is so happy for some reason

  • @yope0175
    @yope0175 5 років тому

    Wouldn't p technically be -3 as 1/x^3 is the same as x^-3, therefor p < 1 and is divergent?

    • @1243hsd
      @1243hsd 5 років тому +1

      No, it has to have the form of 1/x^p. So p=3 in this case and would be convergent.

    • @Gamma_Digamma
      @Gamma_Digamma 4 роки тому

      #riemannzeta

  • @ernestschoenmakers8181
    @ernestschoenmakers8181 7 років тому

    Does this integral have an elementary solution?

    • @sydneym3251
      @sydneym3251 5 років тому +1

      Ernest schoenmakers yes. You could split up the fraction by dividing each numerator by the denim and then solve from there using whatever method you want.

  • @jpcurley25
    @jpcurley25 Рік тому

    This seems like too much work for this proof. Why can't you just say that this integral is less than x^4/x^5 which converges and be done?

  • @mokouf3
    @mokouf3 4 роки тому

    Remember that, comparison Theorem doesn't work for cosine, sine!

  • @Jamelele
    @Jamelele 7 років тому +2

    did you say, Introduction, party paragraph, conclusion? haha

    • @blackpenredpen
      @blackpenredpen  7 років тому +1

      Maxstar22 I did! Just like writing an essay

    • @blackpenredpen
      @blackpenredpen  7 років тому +5

      Maxstar22 "body" paragraph btw

    • @NotYourAverageNothing
      @NotYourAverageNothing 7 років тому +2

      blackpenredpen I prefer party paragraph.

    • @blackpenredpen
      @blackpenredpen  7 років тому +1

      Can someone give me that time on where I said "body" paragraph? I couldn't find it lol

    • @Jamelele
      @Jamelele 7 років тому +1

      11:00
      :)