General Functions
f
t
F
s
=
L
f
s
e
at
f
t
F
s
-
a
f
t
-
a
u
t
-
a
e
-as
F
s
f
n
t
s
n
F
s
-
s
n - 1
f
0
- ... -
f
n - 1
0
t
n
f
t
-1
F
s
f
τ
g
t
-
τ
dτ
F
s
G
s
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