So in most applications, we refuse to use negative bases. HOWEVER, just because the concept of "logarithm" isn't a function on the complex plane, does not mean that we can't USE complex logarithms: it's just that we have to do something called a "branch cut", which basically picks one output for all values in a consistent way.
In the old days, when people used logarithm tables to do multiplication, the page after the log tables was the antilog tables (to base ten of course). You looked up the logs of your numbers, added them, and then looked up the antilog of that.
I had "the logarithm of a number is the index to which the base is raised to equal that number" drilled into me 60 years ago. It's still helpful when I need a reminder what does what. In this context, y is the number, x is the base and y is the index.
Write out your name here, please. ここに お 名前 を 省略 せずに 書いて ください (「名前 を 清書 してください」の 意 にも とれる) She wrote out a wish list and sent it to Santa Claus. 彼女は お願い の リスト を 全部 書き サンタクロース に 送った The police wrote out a complete report. 警察 は 徹底した 調書 を 作成し ...
Please write … 例文帳に追加 書いてください - Weblio Email例文集 easy to write 例文帳に追加 書きやすい - Weblio Email例文集 write one's autograph 例文帳に追加 サインする. - 研究社 新英和中辞典
動詞 writing present participle and gerund of write 2016, VOA Learning English (public domain) What are you doing? ― Um, I’m writing. ― You are writing! You are writing a lot!