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.
solve f+y*(1-r^(l-a))/(1-r)=p*r^(l-a) and f+y*(1-r^(2*l-a))/(1-r)=p*r^(l-a)+p*r^(2*l-a) for f and y
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random