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人们专门弄了一个自然对数函数的底数 e,是为什么? - 知乎 e 的存在,使得 e^{x} 是求导运算的不动点。-----有了数字 e, 并定义了它的指数,对数是指数的反函数。以 e 为底数,我们可以定义对数函数。 \ln (x) PS: 在定义 ln(x) 之前,已经说明了存在某个数字 e, 使得 e ^ x 的导数为自身。
r Memes the original since 2008 - Reddit Memes! A way of describing cultural information being shared An element of a culture or system of behavior that may be considered to be passed from one individual to another by nongenetic means, especially imitation
Am I the Asshole? - Reddit In your top level comment be sure to include one abbreviation for your judgment, i e YTA = You're the Asshole YWBTA = You Would Be the Asshole NTA = Not the Asshole (and the other person is) YWNBTA = You Would Not be the Asshole (and the other person would) ESH = Everyone Sucks here NAH = No Assholes here INFO = Not Enough Info
Reddit - Dive into anything Reddit is a network of communities where people can dive into their interests, hobbies and passions There's a community for whatever you're interested in on Reddit
Omaha Forums - Index page Statistics Total posts 372454 • Total topics 15813 • Total members 2013 • Our newest member omahachick44
SaintMeghanMarkle - Reddit r SaintMeghanMarkle: Bonjour! Welcome to our snark sub on faux feminist Saint Meghan and her hypocrite prince, Harry
megathread games - Piracy - Reddit 📑 Direct Downloads 🐐 CS RIN RU: Steam Underground • Sign Up The biggest forum in the world devoted to video game piracy, it is a valuable source of games with a vast amount of knowledge
r Conservative - Reddit r Conservative: The largest conservative subreddit https: discord gg conservative
r SquaredCircle - Reddit All text posts, and submissions must be about wrestling or wrestling personalities Posts with a tenuous connection to wrestling (e g an action performed by a wrestling personality with no relation to wrestling, eating a burger or going to see a movie) may be directed to the Daily Discussion thread