Proof by Mathematical Induction (Precalculus - College Algebra 73)

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  • Опубліковано 30 січ 2025

КОМЕНТАРІ • 185

  • @Vanzorz1
    @Vanzorz1 4 роки тому +297

    Yes! This is Amazing, incredibly useful for CS students, Please do consider a Discrete Mathematics series, it would help us a lot.

    • @PBDNR
      @PBDNR 4 роки тому +21

      yeah discrete was quite the class. a good series on it would be super helpful for lots of students.

    • @amitbhagat120
      @amitbhagat120 4 роки тому

      Hmmm

    • @donjuan6118
      @donjuan6118 4 роки тому

      Define "discrete". Because when you take (or anyone takes) Theory of Computation, it's all graph theory application to automata.

    • @marksolvent3259
      @marksolvent3259 4 роки тому +2

      Yeah that would help a lot. I like how this guy dumbs things tf down

    • @noelpadavan5674
      @noelpadavan5674 4 роки тому

      Agreed!

  • @marywangui4682
    @marywangui4682 4 роки тому +14

    You cannot imagine what it felt to come across this channel.. As an international student learning in a different language.. You are t God sent.. Just finished my calc 1 and passed.. I really appreciate..

  • @name8166
    @name8166 4 роки тому +14

    Hey, please comeback professor. We seriously need you. Lectures on Trigonometry, Complex variables and Partial differential equations are needed. You are our only hope.

  • @gianlucamazzi7878
    @gianlucamazzi7878 4 роки тому +22

    Just wanted to leave a comment saying how amazing this guy is and he is the only reason I passed Calc 3. I had a teacher who wasn’t very good at teaching but professor Leonard helped me be one of the few that passed with a good grade

  • @autumrose8710
    @autumrose8710 2 роки тому +11

    This man is truly getting me through my degree. Thank you for all you do.

  • @georgesadler7830
    @georgesadler7830 3 роки тому +6

    Professor Leonard, thank you for a basic Introduction to Mathematical Induction. Learning Mathematical Induction is very helpful in Discrete Mathematics, Advanced Calculus, Number Theory, Linear Algebra and future course in Mathematics. Mathematical Induction helps students to write proofs in Advanced Mathematics. Mathematical Induction helps me to fully understand Advanced Calculus.

  • @slickbonz
    @slickbonz 4 роки тому +12

    I love your Calculus series ( I've watched all of it). It is the reason I passed Calc I and II. I can't wait until you are back in a classroom in front of students again. I miss your sense of humor.

    • @vanshikarawat7328
      @vanshikarawat7328 4 роки тому

      If you have taken notes from these lectures can please share them with me my email id is rawatvanshika26@gmail.com

  • @nutsa2014sniffgluee
    @nutsa2014sniffgluee 4 місяці тому

    you are everything i needed for my discrete mathematics course. immaculate explanation, humanly most explicit explanation and breakdown of each and every activity... best mathematician youtuber in history

  • @danielmadison4451
    @danielmadison4451 7 місяців тому +14

    I fear we have lost you sir. What a devastating loss. I hope you are well and I will always continue to look for your return. A long long time fan.

  • @charbilrom3153
    @charbilrom3153 4 роки тому +2

    I can't said anything. I will meet this guy in person . I downloaded his videos from Cal 1-3 and statistics. I will watch this video for life. Imagine studying in college without knowing the language of lectures(arabic). All I have to do is watching P. Leonard videos and come for quiz or exams laughing at my colleague. 1 million subscribers is not enough to give. I don't know how to thank you.🤝🙏

  • @Edgar632172
    @Edgar632172 4 роки тому +3

    Professor Leonard I am a big fan of the work you are doing! Please consider making a series on content related to proofs. Such material is really scarce to come across on the web even to this day unfortunately. It's a shame too because proofs are the bread and butter of understanding mathematics at a deeper level. :(

  • @tasfiaahsan6262
    @tasfiaahsan6262 4 роки тому +9

    Its 2 am at night
    And i.am.watching your video and doing maths..your are.just amazing professor... Thank you.so much❤️

  • @josephthecreator
    @josephthecreator 2 роки тому +1

    Professor Leonard is the TRUTH! Thank you as always.

  • @JustMoseyinAround
    @JustMoseyinAround 4 роки тому +6

    Superman never disappoints. Thank you sir.

  • @skylerpretto1221
    @skylerpretto1221 4 роки тому +5

    Best explanation of mathematical induction EVER!

  • @Mark-vl3zm
    @Mark-vl3zm 4 роки тому +3

    Hey Professor!! As of writing this comment I have taken my final and passed Pre-Calculus!! I will be taking Calculus 1 for Winter Semester 2021! Thank you so much for these videos they truly did help alot especially with Distance Learning being a thing. I'll see you in your Calc 1 Playlist. Thanks again!!

  • @philasandedlamini9469
    @philasandedlamini9469 2 місяці тому

    I owe you for my whole degree my mental health....wow...i have been struggling the whole semester with proofs but you made it all click.Thank you very much

  • @a7xfreak55
    @a7xfreak55 2 роки тому

    Saving my life once again. Using induction in my Bridge to advanced math class and linear algebra class. After this video I'm golden.

  • @thenkaliway85
    @thenkaliway85 4 роки тому +4

    Wooow I've been looking for Mathematical Induction... Please do lots and lots of videos on it

  • @zander008
    @zander008 10 місяців тому +1

    Yet again Professor Leonard makes something so approachable that zybooks made feel so convoluted. Watching these videos always makes me wish I had time/money to go after a math degree with Professor Leonard teaching the classes!

  • @thomasplatt7329
    @thomasplatt7329 Рік тому

    its unbelievable how quickly my stress dissipates when I see Prof. Leonard has a video covering what I'm stuck on.

  • @glitchpirate71
    @glitchpirate71 4 місяці тому

    One of the best and most in-depth explanations on this short topic. Prof. Leonard should do a video course on Mathematical Thinking.

  • @reginapulane838
    @reginapulane838 4 роки тому +2

    Thank you Prof.....you are a blessing to students ❤❤❤❤❤❤❤❤💃💃💃💃💃💃💃💃💃I thank you a lot Prof, I managed to get my Bachelor of Education degree via your videos

  • @Daniellopezvillalobos-m7z
    @Daniellopezvillalobos-m7z Місяць тому

    4 years later and he is still teaching better than my professors!

  • @ojingaj30
    @ojingaj30 4 роки тому +11

    Professor L,
    I really hope you will go over Trigonometry after College Algebra.
    Thanks for all your hard work!!

  • @mohammedalsulaiman5903
    @mohammedalsulaiman5903 4 роки тому +3

    I love your lecture. I’m from Saudi. I studied statistics 101 so it was wonderful time I spent during watching your lectures that time.

  • @qbtc
    @qbtc Рік тому

    Crystal clear lecture. You are a gift to the math community.

  • @marianasapori4776
    @marianasapori4776 9 місяців тому

    the way you set everything up made it click in my brain.. thanks so much

  • @ecmrn
    @ecmrn 11 місяців тому

    This man gives the best explanations on UA-cam

  • @kickbackprogrammer2253
    @kickbackprogrammer2253 2 роки тому

    wow... Still coming through for me way after Calculus... You're really the MVP. Thank you for all your videos, please keep going on this discreet mathematics/number theory lessons!

  • @samueldarenskiy6893
    @samueldarenskiy6893 Рік тому

    I would start worshipping this dude if made a linear algebra and discrete math playlist

  • @gainsborough25
    @gainsborough25 2 роки тому

    Love your videos, and have used them to help prepare me for teaching my own calculus class!
    I do want to mention that you want to be careful about assuming what you are trying to prove. For example, at 19:25 when you start setting 1+5+9+... + (4k-3) + [4(k+1)-3] equal to what you want it to be.
    Instead, best practice would be simply manipulating the first part of your equality until you get it to the point that it looks like what you want to prove. For me, I did it like the following:
    1+5+9+... + (4k-3) + [4(k+1)-3]
    = 2k^2 - k + 4(k+1) - 3
    = 2k^2 - k + 4k + 4 - 3
    = 2k^2 +4k + 2 - k + 2 - 3 (splitting up the +4 here into two instances of +2)
    = (2k^2 +4k + 2) - k - 1 (association property and also simplified 2 - 3 to be -1)
    = 2(k^2 + 2k +1) - k - 1 (factor out the 2 in the grouped terms)
    = 2(k+1)^2 - k - 1 (factored the grouped polynomial)
    = 2(k+1)^2 - (k+1) (factored out a negative in the non-grouped terms)
    and at this point we can conclude that
    1+5+9+... + (4k-3) + [4(k+1)-3] = 2(k+1)^2 - (k+1) by the transitive property, and have proved the theorem by induction.
    thanks again for all your videos, prof!

  • @sonalfernando7042
    @sonalfernando7042 Рік тому +1

    Subscribed ,thank you for your support.

  • @tanmoy.mazumder
    @tanmoy.mazumder 4 роки тому +1

    so good to see you uploading continuously, professor.
    best wishes

  • @maxd3589
    @maxd3589 4 роки тому +1

    Trigonometry with you, prof Leonard, would be such a blessing. Sadly I must proceed and finish it alone. Guess I'll have to go back to it when you do it!

  • @kwabenatorson6248
    @kwabenatorson6248 2 роки тому

    U've made me understand the concept in fullest

  • @hamzasehavdic
    @hamzasehavdic 2 роки тому

    Goodness Leonard, this felt like a watershed moment for me
    (and the previous Series/Sequence and Asymptote videos)
    I feel like I have a tangible grip harnessing infinity
    God bless you

  • @sunshineberry9829
    @sunshineberry9829 Рік тому

    I just wanted to say thank you so much! you'er angel sent from Haven... I've never understood math faster than this.

  • @alexEMP1
    @alexEMP1 Рік тому

    Best explanation I’ve found from dozens of other videos

  • @dutonic
    @dutonic Рік тому

    Awesome and clear lecture

  • @VictorMilanov
    @VictorMilanov 2 роки тому

    best explanation i have found on this. thank you

  • @mohamedhesham6008
    @mohamedhesham6008 3 роки тому

    You are just out of this world thank you so much for this great video

  • @kylemunsami6039
    @kylemunsami6039 4 роки тому +2

    Good day Professor, It sometimes goes unnoticed when amazing people do amazing things. While this pandemic has caused all our lives to change, your videos became a source of inspiration to us all students. Not many can be as detailed in content and explain with such enthusiasm. Thank you for being the essential worker we needed by delivering excellence on absolutely every video uploaded. May your 2021 be im'PECC'able("see what i did there-HA HA HA"-Preofessor Leonard).

  • @johannesnilsen1904
    @johannesnilsen1904 7 місяців тому

    THIS IS EXACTLY WHAT I NEEDED. GREAT EXPLANATION :)

  • @rafaelkacaribu2081
    @rafaelkacaribu2081 7 місяців тому

    Thank you so much Proffesor Leonard, finally now I understand the basic concept of this mathematical induction. I will retake exam discrete math and hope i can answer the questions. Thank you sir

  • @JoshuaKipkoech-b5e
    @JoshuaKipkoech-b5e 3 місяці тому

    God bless you prof Leonard
    Gaining alot lately

  • @camquilici5422
    @camquilici5422 4 роки тому +46

    Professor, can you please put a Linear Algebra series on your todo list?

    • @adamharoon6021
      @adamharoon6021 4 роки тому

      this would be something I would watch

    • @Peter_1986
      @Peter_1986 4 роки тому +7

      He has already confirmed in his video "Professor Leonard's Important Announcement 2019" that he will make Linear Algebra videos in the future.

    • @adamharoon6021
      @adamharoon6021 4 роки тому

      @@Peter_1986 oh sweet

    • @أميرالبلابل
      @أميرالبلابل 4 роки тому

      @@Peter_1986 amazing

    • @name8166
      @name8166 4 роки тому

      @@adamharoon6021 Try James Hamblin for linear algebra

  • @CoolMachination
    @CoolMachination 4 роки тому

    Happy New and much blessings upon you Sir and family, and Much much appreciation for your efforts

  • @mattrhoades9487
    @mattrhoades9487 4 роки тому +1

    Another way to explain it would be subtract the series of n=k terms from the series of n=k+1 terms and the only thing standing is the k+1th term on the left hand side and the difference between the right hand side terms...simplify the right hand side and show the right hand side (differences) equals the k+1th term.

  • @blockrock44
    @blockrock44 4 роки тому

    Thanks so much! I have an exam in Discrete Mathematics to take today, and I know this will be very important for it! Really glad you had a video on it, especially from just a few days ago!!
    Hope you are well as you can be!

  • @parsarahimnia5376
    @parsarahimnia5376 Рік тому

    professor Leonard, you are an amazing man

  • @Gamechanger-Hub
    @Gamechanger-Hub 11 місяців тому

    Your videos are having good effect on my colleagues and I, We thank you so much 👏. We consider if we can have a playlist on Abstract Algebra with subtitles: Mapping, Binary Operation, Relations, Mathematical Induction, Divisors, Irrational Numbers, Rational Numbers, Complex Numbers, Congruence Modulo N, Groups, Rings and Fields.🙏

  • @nooranjeon
    @nooranjeon Місяць тому

    thank you sir you really illustrate better than my professor

  • @dbum896
    @dbum896 2 роки тому

    Super concise and optimally explained, thank you!

  • @joaquinbustos3069
    @joaquinbustos3069 Рік тому

    youre the best math professor ever

  • @korneliusadam
    @korneliusadam 4 роки тому +1

    lectures about linear algebra would be great! many thanks for these lectures, appreciate much what you are doing and for free. everything is explained in a great manner. if the donation is possible I would be glad to support as much as I can. I am sure there are many who would support such a great job. there are many lectures and lecturers but this is far above them.

  • @apeiros7999
    @apeiros7999 4 роки тому

    You give great lectures! I hope to one day make as good videos as yours. You are a great inspiration to young people such as myself.

  • @JudithTennes-f6v
    @JudithTennes-f6v Рік тому

    Well understood with good explanation

  • @tambuwalmathsclass
    @tambuwalmathsclass 4 роки тому

    So great

  • @squpsqup2708
    @squpsqup2708 4 роки тому

    All support for that professor

  • @janoycresva276
    @janoycresva276 4 роки тому +4

    I wonder when he'll finish his Differential Equations series and start his Linear Algebra vids 🧐

  • @qwqwtry7027
    @qwqwtry7027 4 роки тому +5

    Holy hellllllll!!!!!!!! He finalllyyy did!!!!!!!

    • @reginapulane838
      @reginapulane838 4 роки тому

      Yes 💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃💃

    • @mellima4226
      @mellima4226 4 роки тому

      Hahahh love your reaction.

  • @stevewest6133
    @stevewest6133 2 роки тому

    Great idea, giving a subsequent example after the base case. It drives home the point that the SUM OF the left side at the nth term = formula on the right side with n plugged in.
    For example at n=3, the correct workup is 1+3+5 = 3^2, its NOT 2(3)-1 = 3^2. That's obvious. But at n=1, students might not get the distinction since 2(1)-1 does equal 1^2..... wrong process leads them to a true statement and confusion.

  • @Loots1
    @Loots1 2 місяці тому

    this is exactly how i solved induction in my real analysis class, and i got the question wrong because i worked on both sides of the equation at the same time

  • @rmarani3530
    @rmarani3530 4 роки тому +2

    Thank you so much sir

  • @IEHD01
    @IEHD01 Рік тому

    Wow you explain this so well compared to my teacher. Thank you

  • @Polyrthyawhut
    @Polyrthyawhut 4 роки тому +1

    One of the best.

  • @williammendez5209
    @williammendez5209 4 роки тому +1

    I really hope you'll someday do a series on tensor calculus and differential geometry.

    • @Czmlol
      @Czmlol 4 роки тому

      I doubt that it's his domain.

    • @dpmike32819
      @dpmike32819 3 роки тому

      @@Czmlol I bet it is!,,

  • @ayushishrivastava150
    @ayushishrivastava150 4 роки тому

    Please start a complete course of modern algebra.

  • @EVRIEONE1
    @EVRIEONE1 3 роки тому

    This makes me happy!

  • @jonathan1414
    @jonathan1414 3 місяці тому

    Yes I have a better understanding now.

  • @Porixify
    @Porixify 4 роки тому +1

    Oh please, get to Trig soon!

  • @saltedavocado8006
    @saltedavocado8006 2 роки тому

    YOU TEACH BETTER THAN MY PROFESSOR!!!!!

  • @MarcelloPalucci
    @MarcelloPalucci 3 місяці тому

    I love this man

  • @Atrainn234
    @Atrainn234 2 роки тому

    Thank you

  • @renefagermo
    @renefagermo 3 роки тому

    Thanks, L!

  • @nigeladams8321
    @nigeladams8321 4 роки тому +1

    this helped a ton

  • @alamgirkhan330
    @alamgirkhan330 4 роки тому +3

    Professor after pre calculus i think you do algebra or partial differential equation or real analysis

  • @TechnicalDoe
    @TechnicalDoe 2 роки тому

    Outstanding sir 😍😍😍

  • @nerdymath89
    @nerdymath89 4 роки тому

    Sir you're the BEST!

  • @gauravbains8426
    @gauravbains8426 Рік тому

    Thank you bro!

  • @adrianloh6919
    @adrianloh6919 4 роки тому +1

    What if the central of domino not falling? All textbooks don’t give examples of what if the induction failed? Can somebody do 1 example showing induction fail?

  • @cardinalblues7121
    @cardinalblues7121 4 роки тому

    Thank you for the amazing video, it helps me a lot ,Mr Kent ,oh...Professor Leonard :D

  • @Peter_1986
    @Peter_1986 2 роки тому

    5:33
    "4 does equal 4 - that is really kinda cool!"
    Haha!

  • @wilsonguo1580
    @wilsonguo1580 4 роки тому +4

    How many proofs do I need to do for arms like that? Please provide a proof lol

  • @andreaskoutsogiannis5795
    @andreaskoutsogiannis5795 4 роки тому +1

    Love you!

  • @lunganispider
    @lunganispider Рік тому

    thank you so very much ❤

  • @scar6073
    @scar6073 4 роки тому

    Thank you so much! ♥️

  • @user-pq2qd1sd8m
    @user-pq2qd1sd8m 4 роки тому +4

    can you explain the strong mathematical induction, please 🙏?
    I didn't understand it 😭😭, and I have final exam after week in discreet mathematics😭😭

  • @firstdbzmaker
    @firstdbzmaker 4 роки тому

    Please do a course on discrete math!

  • @rupendrakushwah
    @rupendrakushwah 4 роки тому

    Thnx u professor u r very helpful for me I'm from India ❤️❤️❤️❤️❤️ love from India u help me in my lyff ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ a great thanks u dear I pray to god that God will help u ❤️❤️❤️❤️❤️❤️

  • @riwasabri6483
    @riwasabri6483 4 роки тому

    Hi !! Love your videos. Could you please to a Linear Algebra series? Thanks !!

  • @nervous711
    @nervous711 2 роки тому

    What if there's some sequence in which the pattern remains until n reaches a very large number and we aren't aware of it?

  • @inamustaf3435
    @inamustaf3435 3 роки тому

    Wow absolutly prof😯

  • @adhilmuhammed9402
    @adhilmuhammed9402 4 роки тому

    I love learning math from superman ❤️

  • @cricketlover1105
    @cricketlover1105 2 роки тому +1

    This is amazing vedio

  • @xander3939
    @xander3939 11 днів тому

    In 2n-1 whe you let n=2= (2(2)-1)=2^2 doesnt equal 4, 4-1=3

  • @user-fh2rw9zh8g
    @user-fh2rw9zh8g Рік тому

    Thanks

  • @iamkeeper_
    @iamkeeper_ Рік тому

    You are the best!!!! Ty

  • @The_Angry_BeEconomist
    @The_Angry_BeEconomist 3 роки тому

    lol @ "I like to treat my assumptions as fact" said every economist ever 3:10