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.
收益 R(p) = p * (200 - 4p) 。(a) 何时收益为零？(b) 何时最大？(c) 最大收益是多少？
收益 R(p) = p * (200 - 4p) 。(a) 何时收益为零？(b) 何时最大？(c) 最大收益是多少？
Natural Language
Math Input
Extended Keyboard
