Solution 66: sec(sum(csc(tan(cot(sin(cos(...)))))))

  • Published on Nov 15, 2018
  • Let's telescope our way through the odd functions.
    Congratulations to Jaleb, Kevin Tong, Hiren Bavaskar, reynolds45, Bigg Barbarian, Rohit Agarwal, Aswini Banerjee, Ricardo Mogollon, Albanovaphi7, and aby p for successfully solving this math challenge question! Jaleb was the first person to solve the question.
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Comments • 25

  • Pathagas
    Pathagas 3 months ago

    I love this haha

  • It's the THUG
    It's the THUG 3 months ago +1

    Jaleb is illuminati

  • Sven Cats
    Sven Cats 5 months ago +1

    Awesome video! This problem looks even a bit nicer in 2019, as you can go from 0 to 2019 and replace the 5 by a 1

  • Yerram Varun
    Yerram Varun 9 months ago

    Beautifully done!

  • Nicholas Leclerc
    Nicholas Leclerc 9 months ago +1

    You should reveal the answers of some commenters AFTER the whole video, to avoid spoilers !!!

  • Nick
    Nick 10 months ago +2

    Hi, I have a problem for you.
    limit of the integral of ((n^c)(e^-((x^2)(n^2)))dx) from 0 to c as n approaches infinity such that c is a constant and c>1.
    Does the function inside converges?

  • Harshit Gupta
    Harshit Gupta 10 months ago +2

    good solve......integral limit( minus one to zero) ((x)^(4)-2x^(2))^(1/3)+√(1-√(x^(3)+1))

  • 柯仲遠
    柯仲遠 10 months ago +1

    幹 太強了

  • Facebotter
    Facebotter 10 months ago +5

    Do you solve these while making the video or beforehand?

    • Facebotter
      Facebotter 10 months ago +2

      @LetsSolveMathProblems I love the sense of spontaneity! Presupposing the audiences questions and confusions is really cool :)

    • LetsSolveMathProblems
      LetsSolveMathProblems  10 months ago +7

      I always have at least one complete solution prepared for every weekly math challenge question before the problem is posted. In general, I spend around thirty minutes to a few hours of preparation time prior to actually filming a video

  • Saroj si
    Saroj si 10 months ago +2

    nice Sir many many thanks to you

  • Infested Terran
    Infested Terran 10 months ago


  • Math 1234
    Math 1234 10 months ago

    Please can you explain fractional derivatives and fractional integral step by step

    • Math 1234
      Math 1234 10 months ago

      No I mean one half derivatives of any functions general l mean m/n derivatives or integral of any functions

    • Monster Azice
      Monster Azice 10 months ago

      Math 1234 you mean partial derivatives and integration by parts?

  • Moslema Sultana
    Moslema Sultana 10 months ago +2

    what the heck! I saw 1 to 2018! 😭😭😭

  • Linus Schwan
    Linus Schwan 10 months ago +21

    Great video, I always enjoy these cool problems. Just one suggestion: Maybe you could show the first comment with the right answer at the end of the video or just show their name at the start. That way the answer won't get spoiled so early, which in my opinion would make the video more interesting to watch.

    • Linus Schwan
      Linus Schwan 10 months ago

      @LetsSolveMathProblems You're very welcome!

    • LetsSolveMathProblems
      LetsSolveMathProblems  10 months ago +4

      That is an excellent suggestion. In the next solution video, I will just reveal the name of the comment at the beginning and see if there are any downsides of doing so. If there are no viewers criticizing the new format (with a well founded reason), I will make the implementation permanent. Thank you so much for your helpful suggestion! =)

    SUPRATIM SANTRA 10 months ago +4

    Sir please upload such... Interesting problem more..

  • Aliasger Anees
    Aliasger Anees 10 months ago +3

    Best question to apply even and odd function concept.

  • Ojas sevekar
    Ojas sevekar 10 months ago +3

    Amazing telescopic

  • DrWaffles
    DrWaffles 10 months ago +33

    You did all of that to get sec(0). I appreciate the effort