Find all possible values of X | Triangle Inequality Theorem | Important math skills explained

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  • Опубліковано 16 вер 2024
  • Learn how to find all possible values of X by using the Triangle Inequality Theorem . Important Geometry and Algebra skills are also explained. Step-by-step tutorial by PreMath.com
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    Find all possible values of X | Triangle Inequality Theorem | Important math skills explained
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    Find all possible values of X
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КОМЕНТАРІ • 45

  • @blank3580
    @blank3580 Рік тому +5

    Beautifully explained thanks

    • @PreMath
      @PreMath  Рік тому +3

      Glad you liked it
      Thanks for your feedback! Cheers!
      You are awesome. Keep it up 👍
      Love and prayers from the USA! 😀
      Stay blessed 😀

  • @rudychan8792
    @rudychan8792 Рік тому +8

    Case 4: *all side must be positif*
    b & c are fine, but 'a' > 0
    4x - 5 > 0 ➡ x > 5/4
    Luckily x > 5/3 is above 5/4. 😉

    • @animalfarm7467
      @animalfarm7467 Рік тому +1

      Correct. Glad to see someone is paying attention.

  • @allanflippin2453
    @allanflippin2453 Рік тому +2

    Another limit is that x > 5/4. If not, side BC would go negative. However, the x > 5/3 limit overrides this.

  • @uniquetalentinjamaican
    @uniquetalentinjamaican Рік тому

    Let me make it clear that I love your teaching love your voice and love your channel ... I am a math teacher who love learning new ways to teach math

  • @rafaelliman8167
    @rafaelliman8167 Рік тому +1

    I wanna add that obviously all sides must be of positive value, so x>-3/2, x>-3, x>5/4 must all be fulfilled too.
    But 5/3 is bigger than all of them, so this is redundant.

  • @gopalsamykannan2964
    @gopalsamykannan2964 Рік тому +1

    Good question and good solution. Depiction is superb !

    • @PreMath
      @PreMath  Рік тому

      Excellent!
      Glad you think so!
      Thanks for your feedback! Cheers!
      You are awesome, Kannan. Keep it up 👍
      Love and prayers from the USA! 😀
      Stay blessed 😀

  • @MrPaulc222
    @MrPaulc222 Рік тому +1

    Nicely done. I workred differently. I assigned values to x and went with trial and error (improvement). I got the

    • @PreMath
      @PreMath  Рік тому

      No worries!
      Thanks for your feedback! Cheers!
      You are awesome. Keep it up 👍
      Love and prayers from the USA! 😀
      Stay blessed 😀

  • @weiweiwang2527
    @weiweiwang2527 Рік тому

    Can you tell me what software you are using ? This software works very well to draw any contents when you are talking.

  • @RexBoggs
    @RexBoggs Рік тому

    I thought about using Heron's formula, but I don't think it is necessary. If x = 5/3 then the 3 side lengths are 19/3, 14/3 and 5/3. x must be larger than 5/3 and if it is larger then each of the sides is larger and hence the area is larger. So Heron's formula won't give any values of x that further restrict the possible values of x. What do you reckon?

  • @theoyanto
    @theoyanto Рік тому

    Love this one, logical rather than mathematical, interesting the inequalities give results.. very interesting, never knew this, thanks for filling in the gaps.... In my head 😃👍🏻

  • @zplusacademy5718
    @zplusacademy5718 Рік тому +1

    Welcome to you tube world ❤️🙏 sir always milestone presentation ❤️🙏🙏🙏great greetings from India ❤️🙏🙏🙏

    • @PreMath
      @PreMath  Рік тому

      Many many thanks
      You are awesome. Keep it up 👍
      Love and prayers from the USA! 😀
      Stay blessed 😀

  • @matteovolonghi1981
    @matteovolonghi1981 Рік тому

    What about saying that a side of the triangle must be greater than the difference of the other two and lower than the sum of the other two and examinating only one case?

  • @yalchingedikgedik8007
    @yalchingedikgedik8007 Рік тому

    Thats nice and useful
    Thanks Sir .

  • @KAvi_YA666
    @KAvi_YA666 Рік тому

    Thanks for video.Good luck sir!!!!!!!!!!!!!

  • @shadmanhasan4205
    @shadmanhasan4205 Рік тому

    Do we use Heron's Formula here?

  • @susennath6035
    @susennath6035 Рік тому

    Nice

  • @tompeled6193
    @tompeled6193 Рік тому +1

    What about plugging the values into Heron's formula?

    • @fyroboi2053
      @fyroboi2053 Рік тому

      Possible but it's gonna be soo complex

  • @BigfistJP
    @BigfistJP Рік тому +4

    Once you had x>5/3, the x>1 was a non-factor is solving this.

    • @PreMath
      @PreMath  Рік тому +2

      Thanks for your feedback! Cheers!
      You are awesome. Keep it up 👍
      Love and prayers from the USA! 😀
      Stay blessed 😀

  • @barbazzo
    @barbazzo Рік тому

    By using Heron's formula, it turns out that side b is the height. So this is actually a right triangle, where a^2+b^2=c^2. The solution is then x=(23+2*sqrt(51))/13. I didn't consider x=(23-2*sqrt(51))/13 a solution since it's less than 1. BTW, I thought it a bit strange that side b (x+3) looks longer than side c (2x+3).

    • @bienvenidos9360
      @bienvenidos9360 Рік тому

      Wow that's awesome! I'm not sure how to use Heron's formula to solve for this, I only thought it was only used to find the area of a triangle. But it looks like that is a solution for x for a right triangle.
      I tried with Pythagorean theorem to find solutions for a right triangle. I found 2 possible solutions but it turns out they didn't work because the value for the hypoteneuse in the equation wasn't the largest value. I wonder why I couldn't get that value with the Pythagorean theorem. It reminds me how sometimes I failed to get an answer with the method I chose that led to nowhere.
      Edit: I used the wrong equations the first time around, that's why I ended up with the wrong answers. I ended up with 2 solutions for x that worked that would make it a right triangle. See comment below.

    • @bienvenidos9360
      @bienvenidos9360 Рік тому

      Actually I messed up with Pythagorean theorem earlier that's why I didn't get a working solution. I also got x= (23+2sqrt51)/13 using Pythagorean theorem this time with side AB as the hypoteneuse.
      I also got a second solution for a right triangle with side BC as a hypoteneuse with Pythagorean theorem.
      x = (29+sqrt764)/11

  • @gabetheminerofficial
    @gabetheminerofficial 4 місяці тому

    How do you tell which one is a b or c?

  • @alster724
    @alster724 Рік тому

    Very easy Math problem

  • @राजनगोंगल

    👍👍👍👍👍👍

  • @adgf1x
    @adgf1x Рік тому

    3x+6>4x-5=>x,11 > x>1

  • @rambabuprasad2888
    @rambabuprasad2888 Рік тому +3

    I am first

    • @arpittttt
      @arpittttt Рік тому +2

      To

    • @PreMath
      @PreMath  Рік тому +1

      Excellent!
      Thank you! Cheers!
      You are awesome. Keep it up 👍
      Love and prayers from the USA! 😀
      Stay blessed 😀

  • @yashveersingh1858
    @yashveersingh1858 Рік тому

    Hello sir how can i send you more questions?

  • @AdityaKumar-gv4dj
    @AdityaKumar-gv4dj Рік тому

    Or you can write it as x ∈ (5/3,11)

  • @adgf1x
    @adgf1x Рік тому

    Possible values of x are greater than equal 1and less than 11.

  • @johnalvero7250
    @johnalvero7250 5 місяців тому

    What if the x =0

  • @NITINCHAUHA62
    @NITINCHAUHA62 Рік тому +1

    Hi sir I try to solve it.. What is your real name.. Sir

    • @NITINCHAUHA62
      @NITINCHAUHA62 Рік тому +1

      Could you shout out me please... Sir

  • @uniquetalentinjamaican
    @uniquetalentinjamaican Рік тому

    Its so sad that I was never exposed to this theorem... I would almost believe that this is not possible

  • @bb55555555
    @bb55555555 Рік тому

    huh?

  • @amicoresongs4159
    @amicoresongs4159 Рік тому

    I didn't understand

  • @dgnash
    @dgnash Рік тому

    Please try to stop saying "go ahead and ...".