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.
UPGRADE TO PRO
APPS
TOUR
Sign in
1
0
a
=
0
2
a
+
1
Math Input
Natural Language
Math Input
Input interpretation
Result
POWERED BY THE
WOLFRAM LANGUAGE
