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Page 1: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

Integral

Page 2: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

Integral = Antiderivatives

Derivative;

Integral;

( ) ( )F x f x→

( ) ( )f x F x→

Page 3: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

Konsep limit dan slope

( )F x( ) ( )

0limx

y dyF x f x

x dx∆ →

∆′= = =

y∆

x∆ x

Page 4: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

Konsep limit dan

area di bawah kurva

Y=f(x)

Y

x

∫ dxxf )(

Page 5: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

Definite (proper) integral

Y=f(x)

Y

x

∫b

a

dxxf )(

a b

Page 6: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

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

′ ′= = =

=

= = +∫ ∫

Page 7: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

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

+=+∫

Page 8: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

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= + +

Page 9: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

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

Page 10: 5. integral.ppt [Read-Only] - ocw.usu.ac.idocw.usu.ac.id/course/download/316-MATEMATIKA... · Title: Microsoft PowerPoint - 5._integral.ppt [Read-Only] [Compatibility Mode] Author:

Improper integral

( )a

f x dx

∫ ( )lim

b

ba

f x dx→∞ ∫

a

( )b

f x dx−∞

a

( )lim

b

aa

f x dx→∞ ∫