Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
y=x^3+x是一个一对一函数吗?
自然语言
数学输入
扩展键盘
示例
上传
随机