Arc Length | Calculus 2 Lesson 6 - JK Math

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  • เผยแพร่เมื่อ 29 ธ.ค. 2024

ความคิดเห็น • 16

  • @berzi9028
    @berzi9028 หลายเดือนก่อน +6

    i dont comment much, but you have been such a huge help in me passing through my calc 2 class currently. The explanation, the quality, its really like a gem. I know you have been making such good vids for a long time and not getting the views you deserve, and I hope you continue making more vids of calculus and beyond and one day i hope it will be worth it, all the time and effort you put in and all the struggle.
    Thank you.

    • @JKMath
      @JKMath  หลายเดือนก่อน +2

      Thank you for sharing, this is a very kind comment. I greatly appreciate it. Glad the videos are able to help you. Knowing that they are helpful is already worth it :) I wish you the best in your calc 2 course, and if you ever have any questions be sure to let me know!

  • @malldvd
    @malldvd 6 หลายเดือนก่อน +9

    Im glad I found this channel. It made me realize that font can play a big role in absorbing the information. The rounded strokes make calculus feel less intimidating.

  • @AnnakaReed
    @AnnakaReed 6 หลายเดือนก่อน +4

    I just really wanted to say thank you this is the best math channel on youtube!

  • @AllanPoeLover
    @AllanPoeLover 5 หลายเดือนก่อน +4

    講解得好清楚
    讚 !

  • @i7zu5
    @i7zu5 2 หลายเดือนก่อน

    YOU ARE THE GOAT OF CALCULUS

  • @Rozhan_Fard
    @Rozhan_Fard 2 หลายเดือนก่อน

    The formula explanation was sooooo good🙏

  • @Tivnanmath
    @Tivnanmath 2 ปีที่แล้ว +4

    I got a bit uneasy on the last example b/c you left the lower and upper limits as the x values 0 and 8 when you expressed the integral in terms of u. I thought you were going to plug those in, but then you changed it all back in terms of x and it was worked out. I tell students to write x=0 and x=8 if they choose to go back to the x world. I find it a bit easier to to use u=1 and u=5 to evaluate the integral. No harm no foul though, but it does lead to confusion when x and u appear in the same integral.

    • @JKMath
      @JKMath  2 ปีที่แล้ว +5

      Thanks for the feedback! My go-to strategy is to always go back in terms of x, so that is the method I chose to show. However I do agree that writing the limits as x=0 and x=8 is the better approach. And although I do show that step in my video on u-sub for calc 1, I did leave it out in this video which was not focused on u-sub. I never want to confuse anyone, so I will be sure to make that step more clear in future recordings. Thanks again!

    • @malekabbr
      @malekabbr 7 หลายเดือนก่อน

      No he was right at last he substituted u with what it was but also using u as 1 and 5 is also true

  • @Wunjogenius
    @Wunjogenius 5 หลายเดือนก่อน +1

    holy shit, this is a way shorter explaination for the formula than the professor leonard's one. thanks

  • @sommerray5600
    @sommerray5600 3 หลายเดือนก่อน

    Why dont square root and square just cancel, and you just deal with multiplying it out

    • @JKMath
      @JKMath  3 หลายเดือนก่อน +2

      Which example are you referring to? Or are you talking about the arc length formula? If you are talking about the formula, the square root and square cannot be canceled out because not everything under the square root is being squared. You have 1 + (f'(x))² under the square root, not (1 + (f'(x))²)². You can't take the square root of 1 and (f'(x))² individually. Both terms as a whole, as one quantity, would need to squared in order to algebraically cancel out the square and square root.

    • @sommerray5600
      @sommerray5600 3 หลายเดือนก่อน

      ⁠​⁠@@JKMathoh okay i understand, i did mean the formula

    • @sommerray5600
      @sommerray5600 3 หลายเดือนก่อน

      @@JKMathearned a sub thank you