Art of Learning Mathematics
Saturday, 2 May 2015
Integrals of Exponential Functions
∫
e
a
x
d
x
=
1
c
e
a
x
∫
a
c
x
d
x
=
1
c
⋅
ln
a
a
c
x
,
(
for
a
>
0
,
a
≠
1
)
∫
x
⋅
e
c
x
=
e
c
x
c
2
(
c
x
−
1
)
∫
x
2
⋅
e
c
x
=
e
c
x
(
x
2
c
−
2
x
c
2
+
2
c
3
)
∫
x
n
⋅
e
c
x
d
x
=
1
c
x
n
e
c
x
−
n
c
∫
x
n
−
1
e
c
x
d
x
∫
e
c
x
x
d
x
=
ln
|
x
|
+
∑
i
=
1
∞
(
c
x
)
i
i
⋅
i
!
∫
e
c
x
x
n
=
1
n
−
1
(
−
e
c
x
x
n
−
1
+
c
⋅
∫
e
c
x
x
n
−
1
d
x
)
∫
e
c
x
⋅
ln
x
d
x
=
1
c
e
c
x
ln
|
x
|
+
E
i
(
c
x
)
∫
e
c
x
⋅
sin
(
b
x
)
d
x
=
e
c
x
c
2
+
b
2
(
c
⋅
sin
(
b
x
)
−
b
⋅
c
o
s
(
b
x
)
)
∫
e
c
x
⋅
cos
(
b
x
)
d
x
=
e
c
x
c
2
+
b
2
(
c
⋅
sin
(
b
x
)
+
b
⋅
cos
(
b
x
)
)
∫
e
c
x
⋅
sin
n
x
d
x
=
e
c
x
⋅
sin
n
−
1
x
c
2
+
n
2
(
c
⋅
sin
x
−
n
⋅
cos
(
b
x
)
)
+
n
(
n
−
1
)
c
2
+
n
2
∫
e
c
x
sin
n
−
2
d
x
∫
e
c
x
⋅
cos
n
x
d
x
=
e
c
x
⋅
cos
n
−
1
x
c
2
+
n
2
(
c
⋅
sin
x
+
n
⋅
cos
(
b
x
)
)
+
n
(
n
−
1
)
c
2
+
n
2
∫
e
c
x
cos
n
−
2
d
x
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