It will get more and more difficult from next time. Dengan Dengan has released a book on “study methods”! I’ve written everything about me, who is by no means a “genius”, so if you’re interested, please make a reservation below. ⬇︎Reservation site for “100 lessons for idiots by a former idiot” ⬇︎ https://www.amazon.co.jp/dp/4815612854/ Dengan Twitter @dengan875 Hana Dengan https://www. youtube.com/channel/UCPyNsNSTUtywkekbDdCA_8Q Hoei Co., Ltd. https://www.youtube.com/channel/UCYeEDmOpvEtnKM6KSSqC4UA Hello everyone, this is Dengan. I used to run a channel called Hanaodengan, but now I’m working hard on my own. We publish projects centered on studying and videos explaining mathematics. Thank you. Dengan⬇︎Daily Dengan editorial cooperation⬇︎ ・Mako https://twitter.com/mako_movieee ・Nora https://twitter.com/nora_hanaden ・Dumbo https://twitter.com/Dam_bo_ ・Okay https: //twitter.com/yosshi_ediedu ・Takuya https://twitter.com/takuya_edit ・Shige#Daily Dengan # #

    35 Comments

    1. 初等関数って仮定の下だと
      すべての実数で定義できないのは
      √(0以上)かlog(0超)か
      tan((奇数)*π/2以外)か分数(分母非0)あたりか
      この質問結構強そう

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