∫
−
∞
∞
e
−
x
2
d
x
=
π
\int_{-\infty}^{\infty} e^{-x^2}\,dx = \sqrt{\pi}
∫
−
∞
∞
e
−
x
2
d
x
=
π
a
2
+
b
2
=
c
2
a^2 + b^2 = c^2
a
2
+
b
2
=
c
2
P
V
=
F
V
(
1
+
r
)
n
PV = \frac{FV}{(1+r)^n}
P
V
=
(
1
+
r
)
n
F
V
∫
a
b
f
′
(
x
)
d
x
=
f
(
b
)
−
f
(
a
)
\int_a^b f'(x)\,dx = f(b) - f(a)
∫
a
b
f
′
(
x
)
d
x
=
f
(
b
)
−
f
(
a
)
P
(
A
∣
B
)
=
P
(
B
∣
A
)
P
(
A
)
P
(
B
)
P(A|B) = \frac{P(B|A)P(A)}{P(B)}
P
(
A
∣
B
)
=
P
(
B
)
P
(
B
∣
A
)
P
(
A
)
E
=
m
c
2
E = mc^2
E
=
m
c
2
A
=
P
(
1
+
r
n
)
n
t
A = P\left(1+\frac{r}{n}\right)^{nt}
A
=
P
(
1
+
n
r
)
n
t
e
i
π
+
1
=
0
e^{i\pi} + 1 = 0
e
iπ
+
1
=
0
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