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.
E
x
p
a
n
d
ω
+
1
ω
x
-
1
k
=
0
k
n
d
x
Math Input
Natural Language
Math Input
