2025 千葉大学 理系１《数列》数学入試問題をわかりやすく解説

Thank you for watching. This video is about a problem that appeared on the 2025 Chiba University entrance exam. 00:00 Opening & Overview of the Problem 00:40 Explanation of (1) 03:15 Explanation of (2) 04:28 Explanation of (3) This video covers the following topics. ------------------------------------------ About the Homepage ------------------------------------------ Hide Channel's Homepage is here: https://hide-channel.studio.site You can view and print the PDF file used in the explanation. Please come and visit! ------------------------------------------ About the Problem's Difficulty ------------------------------------------ ★☆☆☆☆...Extremely Easy. Slightly more difficult than a textbook problem. ★★☆☆☆...Easy. Mostly solvable by following the theory. ★★★☆☆...Average. Some difficult points, but manageable. ★★★★☆...Difficult. It's okay if you can't answer it completely. A problem where you can aim for partial credit. ★★★★★...Extremely difficult. Unless you're a math enthusiast, you can skip this. This is strictly the level of an entrance exam problem. This is consistent throughout the entire channel and does not vary by grade level or university. It is set based on Hide-sensei's personal judgment and bias. Please use it as a reference. ------------------------------------------ Hide-sensei's Profile ------------------------------------------ ・Current high school teacher ・Over 20 years of experience teaching at a prestigious high school 1. I want to support students taking entrance exams through math classes 💪 2. I want to increase the number of high school students who find math interesting 💖 3. My hobby and skill improvement 😁 4. It might be fun if I could monetize it... 💰 With these goals in mind, I am currently distributing high school math and knowledge useful for university entrance exams! Using university entrance exam problems and mock exam problems as material, I explain: ・Basic knowledge ・Mathematical thinking ・Exam techniques in relation to the latest entrance exam problems (=the skills universities are currently seeking), in the clearest way possible. 🙆‍♂️ To minimize the video length, the calculation part has been simplified in the explanation. Please forgive me. 🙇‍♂️ ------------------------------------------ SNS etc. ------------------------------------------ ◆YouTube    / @hide-channel   Subscribe here ◆X   / hidechannel_   I will notify you when I upload a video. I also accept DMs. ◆mail [email protected] Please contact me here for business inquiries. ------------------------------------------ A request to our viewers ------------------------------------------ I would be happy if you commented on any mistakes or better alternative solutions. Ideally, I'd like to see a comment section where viewers can ask questions and other viewers can answer them, so please comment on even the smallest things and help liven up the comment section. It's fine if you see the channel but don't need it, but I don't want there to be high school students who think, "I wish I had seen this channel." That's why I'm aiming for 100,000 subscribers! We will do our best to create useful videos, so please support us by subscribing to the channel, liking the videos, commenting, and sharing with friends. ------------------------------------------ To University and Preparatory School Personnel ------------------------------------------ In our explanatory videos, we "quote" entrance examination problems, etc., in accordance with Article 32 of the Copyright Act, adhering to the following rules: 1. Clarification of the relationship between primary and secondary sources: The main purpose of the videos is to provide mathematical explanations based on our own interpretations, and the problem statements are included only to the minimum extent necessary. 2. Prohibition of alteration: The problem statements are published as they are in the original text, maintaining the identity of the content. 3. Clear indication of the source: The source of the quotation (university name, year of implementation, etc.) is indicated in the video or in the description box. Due to the nature of mathematics, there may be some overlap in expression in the solution methods and logical structure, but we create this as our own original educational content. Above all, we operate this channel with deep gratitude and respect to the university and preparatory school personnel who created these wonderful problems. If there are any shortcomings and you would like any videos removed, please contact us via email or X DM, etc., and we will respond promptly. ------------------------------------------ #HideChannel #Mathematics #UniversityEntranceExam