问题已解决
请问老师:(32%-19%) ²乘0.4+(17%-19%)²乘0.4+(-3%-19%)乘0.2。请把这个式子开一下根号,把计算过程谢出来,谢谢
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((32%-19%) *0.4+(17%-19%)²*0.4+(-3%-19%)*0.2)1/2同学,这个用搜狗输入法好做
2019 12/03 15:40
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84784954 ![](/wenda/_nuxt/img/reply1.d92ea43.png)
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2019 12/03 15:44
请问:-3%-19%=-16%对不对?17%-19%=-2%对不对?我这样理解对吗?
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venus老师 ![](/wenda/_nuxt/img/reply2.28c7604.png)
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2019 12/03 15:45
17%-19%=-2%这个是对的。-3%-19%=-16%这个明显不对
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84784954 ![](/wenda/_nuxt/img/reply1.d92ea43.png)
![](/wenda/_nuxt/img/reply1.d92ea43.png)
2019 12/03 15:48
搜狗输入法怎么找不到根号?
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84784954 ![](/wenda/_nuxt/img/reply1.d92ea43.png)
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2019 12/03 15:50
-3%-19%这个怎么算?
![](https://pic1.acc5.cn/009/39/53/87_avatar_middle.jpg?t=1714029298)
venus老师 ![](/wenda/_nuxt/img/reply2.28c7604.png)
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2019 12/03 15:55
在搜狗输入法中文状态下,输入要开根号的数字,然后shift+6,最后括号里开N次方输入1/N 例如:8^(1/3)=2 2^(1/2)=1.41421356237