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.
使用 V = \piintegrate from -r to r of (r^2 - x^2) dx 证明半径为的球体的体积是。
使用 V = \piintegrate from -r to r of (r^2 - x^2) dx 证明半径为的球体的体积是。
Natural Language
Math Input
Extended Keyboard