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.
-
1
0
.
5
1
1
0
0
0
1
I
n
v
e
r
s
e
-
1
0
.
5
1
1
1
5
0
1
5
0
Math Input
Natural Language
Math Input