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orestis.malaspin
math_tech_info
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Borne intégration
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orestis.malaspin
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8 years ago
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00119e41
Revert "Fixed b0 formula"
· 00119e41
Osoldier
authored
8 years ago
This reverts commit
c78ed1a9
.
cours.tex
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@@ -2495,7 +2495,7 @@ Pour $a_j$ on a de façon similaire
\end{equation}
En particulier si
$
j
=
0
$
, on a
\begin{equation}
a
_
0=0,
\quad
b
_
0=
\frac
{
1
}{
T
}
\int
_
0
^
T f(t)
\dd
t.
a
_
0=0,
\quad
b
_
0=
\frac
{
2
}{
T
}
\int
_
0
^
T f(t)
\dd
t.
\end{equation}
On constate que
$
b
_
0
/
2
$
correspond à la valeur moyenne de
$
f
(
t
)
$
dans
$
[
0
,T
]
$
. Cela
permet d'approximer des fonctions dont la valeur moyenne n'est pas nulle (les sinus et cosinus ont toujours
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