2018年2月7日
什么是极坐标？ —— 一点微小的想法 What is Polar Coordinate ? - Some Naive Thoughts about It
摘要： Can you answer these three questions? The answer seems to be trivial, since we can use our eyes to obtain the answer. But can you use mathematical met 阅读全文
posted @ 2018-02-07 16:12 fzyzcjy 阅读(1006) 评论(0) 推荐(0) 编辑