: جـئاـــــــــتـن
Omar Abidar -AGADIR
2 BAC SM A et B
Arctan
Arctan
2
;
2
tan
06.06.26.59.07 :
2
;
2
:
Arctan
Arctan
Arctan
x Arctanx Arctan x
Arctan
x
y
2
;
2
Arctan x y x tan y
x tanArctan x x
x
2
;
2
Arctan tan x x
x, y Arctanx Arctan y x y
x, y Arctanx Arctan y x y
x
Arctan
x
'
1
x
' x2
1
Omar Abidar -AGADIR
2 BAC SM A et B
3 2
;
2
2
;
3 2
Arctan
f x Arctantan x :
06.06.26.59.07 : 01
C
Arctan
tan
2009 4
,
B=
tan
arctan
2
,
A=
Arctan
tan
101 4
:
: 02
D arctan 1 arctan 1 arctan 1 , C= arctan 2 arctan 3 arctan 2 3
2
5
8
lim
x0
1 x
Arctan
1 x
2
: 03
Arctan x2 2x
,
lim x
x
2
Arctan
x
, lim x0
x
Arctan x
, lim
x0
x
Arctan x
lim
4
x1
x 1
,
lim x Arctan x2 1 x ,
x
lim
x
x
1
x
Arctan
1 x
:
: 04
x 0,
arctan
x
arctan
1 x
2
x 0,
arctan
x
arctan
1 x
2
Arctan
4 3
2
Arctan
1 2
arctan
1 7
2
arctan
1 3
4
x 0
Arctan
x
1
Arctan
x
Arctan
x2
1 x
1
x
cos Arctan x 1 1 x2
x sin Arctan x
ab 1 : arctan a arctan b arctan a b
1 ab
S 2arctan 1 arctan 1 2arctan 1
4
7
13
: 05
x
-1
1 x2
-2
:
-3
E2
:
arctan
2
x
arctan
x
4
E2 4
:
Arctan
x
1
Arctan
x
Arctan
x
1
2
: 06
E1 : arctan x arctan
3x 7 12
E3
:
arctan
hxttpa:r/c/atadn2mx a3th.c7om/
12
Omar Abidar -AGADIR
2 BAC SM A et B
Arctan
06.06.26.59.07
E : arctan 2x arctan x
4
E
E
: 07 1 2
x, y
: 08
y 0 Arctanx y Arctanx Arctan y
(1
y 0 Arctanx y Arctanx Arctan y
(2
x : Arctan x Arctan x
(3
Arctan x y Arctan x Arctan y
(4
John MACHIN (1680-1751)
: 09
4
4 arctan
1 5
arctan
1 239
tan4 tan2
arctan
1 5
1
4
arctan
1 5
4
0
arctan
1 5
6
2
John MACHIN
3
f x 2arctan 1 x2 x arctanx
x
f
f 0 f 'x
: 10
1 2 3
f
x
Arctan
x 1 1 x
x 1; x ;1
f
: 11
Df x
f 'x (1
f x Arctan x
(2
4
f x Arctan x 3
(2
4
3
Omar Abidar -AGADIR
2 BAC SM A et B
Arctan
06.06.26.59.07
x : f x Arctan 1 x2 x
f
: 12
x : 0 f x
1
2
x
2
1 tan2 f x 2x tan f x
a
x
tan
2
2
f
x
b
x : f x 1 Arctan x
c
42
x 1;1:
f
x
2 Arctan
1 x 1 x
f
x1;1: 0 f x
1;1
x
1
tan
2
f
x
2
x
1
tan2
f
x
2
x
sin
2
f
x
: 13 3 4
d
e
f
x
Arctan x
Arctan
1 1
x x
:
f x
1
f f
: 14
( m * 4
x
x x3 Arctan x x x3 x5
3
35
Arctan x x
lim
x0
x3
(1 : 15 (2
m
)
f
m
x
Arctan
xm 1 mx
f
: 16
D fm
x
fm ' x (1
x
\
1 m
fm x fm x
(2
m *
Omar Abidar -AGADIR
2 BAC SM A et B
Arctan
06.06.26.59.07
x
1 m
,
fm x Arctan x Arctan m
(3
Arctan
m
Arctan
1 m
2
(4
,
1 m
fm x Arctan x Arctan m
(5
1,0,1
x, y x y
Arctan
x y 1 xy
Arctan
x
Arctan
y
(6
x 0;1
f
x
x3
Arctan
1
f
1 x4
:17
D f
(1
x0 0 f
(2
x Arctan x x
(3
1 x2
x
x3 f x x
(4
1 x4
x
xf
'
x
3
f
x
2 x5 1 x4
(5
x
x2 1 x4
3
1 x4 2x2
f 'x
(6
f
(7
f
x
x
Arctan
1 x
f 0 0
, x * f
: 18
0 f
1
lim f x
2
x
x *
x 2 x2
Arctan
1 x
3
f
4
O f
5
Cf 6
5
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