20.Explain why and how the huma eye vision problem can be corrected.

20.Explain why and how the huma eye vision problem can be corrected. Define economies of scale and explain why they might arise.Define diseconomies of scale and explain why they might arise.求中文答案. 线性代数特征值和特征向量证明题Let u be an eigenvector of A corresponding to an eigenvalue p ,and let H be the line in R^n through u and the origin .Explain why H is variant under A in the sense that Ax is in H whenever x is in H .Let K Explain what a brand is and why it is important?用英语回答 write and explain why you are a good person for the job请列出范文 Write and explain why you are a good person for the job.的意思 List three benefits of entrepreneurship to the economy of china and explain why they're inportant. Explain why an energy pyramid and a food pyramid have similar shapes. what is you favorite holiday describe and explain why you like it（长一点） explain why externalities are a form of market failure,and provide an example could anyone explain why the operating income deduct both the total tax and the tax benefit? 英语翻译you are so special for me and I even can't explain why. What has happened recently in China’s current events that interests you and explain why?翻译! What is scarcity and why it is so important in economics?i need the definition and meaning about the scarcity and explain why is it so important.thanks! Most of the time,would rather be misunderstanding,do not want to explain.Letter and do not believe,in your mind.I understand people,explain why. Example of a type of web site where mainly static pages would be the best option,and explain why?Give an example of a type of web site where mainly static pages would be the best option,and explain why? 英语翻译What would your study group like to ban,why and explain the outcomes of banning this behaviour. 口语考试 2-3分钟 What is your favorite holiday?Describe and explain why you like it.