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.
2(p^k)(q^l) <= (((p^k)(q^l) + 1)(p^(k+1) - 1)(q^(l+1) - 1))/((p^k)(q^l)(p - 1)(q - 1)) < 2(p^k)(q^l) + 1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
