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.
ln2 + 0.5ln(x) + 0.5ln((s*x)/t) = r
ln2 + 0.5ln(x) + 0.5ln((s*x)/t) = r
Natural Language
Math Input