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.
人口的增长常数 r = 0.05 /年。多少年人口增长 50%?
人口的增长常数 r = 0.05 /年。多少年人口增长 50%?
Natural Language
Math Input
Extended Keyboard