Basic Examples
(
2
)
Plot the
E
r
f
c
i
function:
P
l
o
t
[
◼
]
E
r
f
c
i
[
x
]
,
{
x
,
-
2
,
2
}
-
2
-
1
1
2
-
4
-
3
-
2
-
1
—
—
—
Examine some particular values:
[
◼
]
E
r
f
c
i
[
0
]
-
1
π
[
◼
]
E
r
f
c
i
[
2
]
-
1
4
π
+
2
E
r
f
c
[
2
]
S
c
o
p
e
(
3
)
A
p
p
l
i
c
a
t
i
o
n
s
(
1
)