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.
y
=
0
.
0
1
1
1
*
e
4
0
1
0
.
3
8
6
*
x
4
1
w
i
t
h
x
b
e
t
w
e
e
n
0
a
n
d
1
4
4
y
b
e
t
w
e
e
n
0
a
n
d
4
0
0
Math Input
Natural Language
Math Input