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.
plot y=floor(9^floor(x)/10^(floor(log(9^floor(x))/log(10))))
plot y=floor(9^floor(x)/10^(floor(log(9^floor(x))/log(10))))
Natural Language
Math Input
Extended Keyboard