math 3 2
x
+
a
/
b
-
1
-
1
+
=
x
D
sin
L
sin
⁡
x
1
+
…
+
n
π
ⅈ
ⅇ
2
0.123
1,000,000
2.1e10
0xFFEF
MCMLXIX
twenty one
2
+
3
⁢
ⅈ
1
2
π
ⅇ
+
<
≤
<=
++
∑
.NOT.
and
⁢
+
(a+b)
(
a
+
b
)
[0,1)
[
0
,
1
)
f(x,y)
f
⁡
(
x
,
y
)
f
⁡
(
x
)
sin
⁡
x
x
⁢
y
m
1
⁣
2
2
3
4
ⅆ
ⅆ
x
(
_
a
b
)
‾
(
a
b
)
x
→
maps to
y
f
⁡
(
x
)
=
(
x
+
1
)
4
=
x
4
+
4
⁢
x
3
+
6
⁢
x
2
+
4
⁢
x
+
1
Theorem 1:
 
    
/* a comment */
there exists
δ
>
0
such that
f
⁡
(
x
)
<
1
a
+
b
+
c
x
2
x
2