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Bài 5. Tìm \(y\) biết:

a) \(\left(y+\dfrac{1}{2}\right)+\left(y+\dfrac{1}{4}\right)+\left(y+\dfrac{1}{8}\right)+\left(y+\dfrac{1}{16}\right)=1\)

b) \(\left(y+\dfrac{1}{2}\right)+\left(y+\dfrac{1}{4}\right)+\left(y+\dfrac{1}{8}\right)+...+\left(y+\dfrac{1}{1024}\right)=1\)

A. aerobics

Tham khảo ở link này bạn nhé: https://hoc24.vn/cau-hoi/giai-bai-toan-bang-cach-lap-he-phuong-trinh-mot-hinh-chu-nhat-co-chu-vi-la-26m-tang-chieu-rong-len-3m-va-giam-chieu-dai-3m-thi-dien-tich-khong-do.174788838530

1 - There are lot of animals and some of them are very beautiful

2 - He is visiting Thu Le zoo in Cau Giay district

Bài 2: Tìm \(x\) biết:

\(x\)\(\times\left(\dfrac{1}{1.2}+\dfrac{1}{2.3}+\dfrac{1}{3.4}+...+\dfrac{1}{49.50}\right)=1\)