[218] 曲率円と曲率半径 #3 一般型 パラメータ曲線の曲率円と半径の定義と計算 弧長パラメータ

Contents: Thanks for watching. At last, I guess you want an explicit expression of curvature for an arbitrary parametrised curve in plane. Yeah, I give it to you all. A bit early Christmas present from me. The climax is actually at the beginning. That’s to comprehend so-called arc length parameter. If you overcome and get the hand of the idea, the goal is almost there. 平面においてパラメータ曲線の各点の周りを円で近似したい、という動機や物理的には加速度の概念から曲率が導入されます。ここでは理論的に良い筋で紹介します。弧長パラメータの便利ささえわかればよいのですが、、、。 -------------------------------------------------------------------------------- 主に数学に関することを動画にしています。みんなで面白いことをあーだこーだ言えたらいいなと。 動画に関するアドバイス（声量・ライト・ペン・板書など）や動画にしてほしいことなど何でも受け付けております。むしろください。 Contact → maths.toshi@gmail.com Thanks a ton for visiting here and reading this. Please subscribe this channel and give this video a like if you like it. I usually make videos about mathematics, but any kinds of topics which I find interesting and attractive. All I want to do is just discuss and talk about them, and communicate with people who are into maths, after all. I am afraid to say that I basically speak in Japanese in my videos; however, I am going to try and write things down in the way everyone can comprehend what they are, not without mathematics literacy at least :-). I would appreciate if you gave me any kind of advice ranging from the topics you would like me to bring about to the volume, my handwriting, and the lighting in my videos. Please do not hesitate to leave any comments for this channel growth, and help me to enrich this channel.