已知25^x=2000,80^y=2000,则1/z+1/y=?
快点啊,需要详细的讲解
人气：282 ℃ 时间：2020-02-03 18:45:04
解答
x=log25(2000) y=log80(2000)
1/x=log2000(25) 1/y=log2000(80)
1/x+1/y=log2000(25)+log2000(80)=log2000(25*80)=log2000(2000)=1
推荐
猜你喜欢
- 有don't do sth instead of doing的用法吗,怎么翻译?
- A successful team beats with one heart是什么意思
- he often___(relax) half a day
- 用作图法求直线斜率时,必须采用什么方法?
- Edward Smith is _____old.He works in a bank.
- 连词成句 threw,Li,Ming,the,ball,another,boy,to
- Lily doesn't want to buy__same present__Lucy did填空
- 麻烦您了,您帮我看看这道题呗 we see things by our eyes对么?为什么
