Saturday, February 11th, 2017

 

2017 AMC 10A SOLUTION

Problem 1 What is the value of ? Solution 1 Notice this is the term  in a recursive sequence, defined recursively as  Thus: Solution 2 Starting to compute the inner expressions, we see the results are . This is always  less than a power of . The only admissible answer choice by this rule is thus . Solution 3 Working our way from the innermost parenthesis outwards and directly computing, we have . Solution 4 If you distribute this you get a sum of the powers of . The largestRead More

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99%的中国家长没想到:真实美国中学什么样

2015年11月03日12:02   教育专栏作者:京城教育圈      (作者/唐闻佳)美国记者爱德华·休姆斯,曾获最高新闻奖“普利策奖”。他曾花了一学年时间,在加州一所公立高中惠特尼高中“蹲......


美國教育培訓市場:你需要知道的真相和格局

 2016-02-23 11:28:13 from read01 【文章摘要】教育培训行业一直以来都有一种共识:产品技术学美以,商业模式看日韩。 作为全世界的创新中心,美国和以色列确实在教育产品......