主题：一项全球研究显示，人类每年都在变得越来越笨。
回复：还敢用TikTok吗？ 这是测试对于你是否被短视频削减了基础智力： 1. If you have an American passport legally, are you a US citi...
Solutions:
1. Yes
2. a community college usually gives you an associate's degree in 2 years, while a state university offers a bachelor's degree in 4 years.
3.(Old) x^3+1=(x+1)(x^2-x+1), where x+1 and x^2-x+1 are both positive integers and are bigger than 1, thus x^3+1 is a composite number.
3.(New) let's assume a/b is rational, then it can be written as p/q where p, q are integers; and likewise b can be written as p'/q' where p', q' are integers. Thus a=p'p/q'q, both p'p and q'q are integers, so a is rational, contradicting "a is irrational".
1. Yes
2. a community college usually gives you an associate's degree in 2 years, while a state university offers a bachelor's degree in 4 years.
3.(Old) x^3+1=(x+1)(x^2-x+1), where x+1 and x^2-x+1 are both positive integers and are bigger than 1, thus x^3+1 is a composite number.
3.(New) let's assume a/b is rational, then it can be written as p/q where p, q are integers; and likewise b can be written as p'/q' where p', q' are integers. Thus a=p'p/q'q, both p'p and q'q are integers, so a is rational, contradicting "a is irrational".
Nederland 25-03-19
最后编辑于: 25-03-19
