5. integral.ppt [read-only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-matematika... ·...
TRANSCRIPT
Integral
Integral = Antiderivatives
Derivative;
Integral;
( ) ( )F x f x→
( ) ( )f x F x→
Konsep limit dan slope
( )F x( ) ( )
0limx
y dyF x f x
x dx∆ →
∆′= = =
∆
y∆
x∆ x
Konsep limit dan
area di bawah kurva
Y=f(x)
Y
x
∫ dxxf )(
Definite (proper) integral
Y=f(x)
Y
x
∫b
a
dxxf )(
a b
Integral vs derivative
( )
( ) ( )
y F x
dyy F x f x
dx
=
′ ′= = =( ) ( )
( )
( ) ( )
y F x f xdx
dy f x dx
dy f x dx F x c
′ ′= = =
=
= = +∫ ∫
Aturan pangkat (Power rule)
( ) 31
3y F x x= =
( ) 2′ = = ( ) n′ = =( ) 2y f x x′ = =
2 31
3x x=∫
( ) ny f x x′ = =
( )11
1
n nx x
n
+=+∫
Aturan Penambahan/Pengurangan
( ) ( ) ( ) ( )f x g x dx f x dx g x dx ± = ± ∫ ∫ ∫
( ) ( ) ( ) ( ) ( )1 2 1 2F x c G x c F x G x c c= + ± + = ± + +
( ) ( )F x G x c= + +
Definite integral
� = lower limit
( ) ( ) ( )b
a
f x dx F b F a= −∫
a� = lower limit
� = upper limit
( ) ( )5 5
3 32 3
11
3 5 1 125 1 124x dx x = = − = − =∫
b
Improper integral
( )a
f x dx
∞
∫ ( )lim
b
ba
f x dx→∞ ∫
a
( )b
f x dx−∞
∫
a
( )lim
b
aa
f x dx→∞ ∫