更新1:
x^x^x^...( y times ). It means there are y xs in the power tower. For example, y = 3 means x^x^x, y = 7 means x^x^x^x^x^x^x, y = 10 means x^x^x^x^x^x^x^x^x^x, and so on. e^ (i x ) = cos x + i sin x, that is Euler Formula.
x^x^x^...( y times ). It means there are y xs in the power tower. For example, y = 3 means x^x^x, y = 7 means x^x^x^x^x^x^x, y = 10 means x^x^x^x^x^x^x^x^x^x, and so on. e^ (i x ) = cos x + i sin x, that is Euler Formula.
收錄日期: 2021-05-04 02:33:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20210217172847AAYltxY