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L o g i k a
Pr o p o s i s i
Tuj ua n :
Ma
me
l o
o p
p r

h
n
g
e
o

a
y
i
r
p

s
e
k
a
o

i
b
a
t
s

s wa d a
u t k a n
p r o p o
o r d a n
i s i

p a t
t e n t a n g
s i s i ,
s i f a t
1
Pr o p o s i s i
De f i n i s i

:

•Se t i a p
p e r n
y a n g h a n y a me
s a t u
n i l a i
a t a u s a l a h .
• d i s i mb o l k a n
me n g g u n a k a n h u
• Pe r n y a t a a n
me mi l i k i ma k n a
• Di s e b u t
s e b a g a i
k

y a t a a n
mi l i k i
b e n a r

r u f
y
/a r t
j
a l i

a n g
i
u g a
ma t
L o g i k a
Pr o p o s i s i
De f i n i s i
L o
me
a t
p e
s e
p r

g
n
a
n
c
o

i
a
u
a
a
p

:

k a
n g a n i , me mp r
me ma n i p u
r i k a n k e s i mp
r a
l o g i s
o s i s i

y
o
l
u
d

a
s
a
l
a

n
e
s
a
r

g
s
i
n
i
L o g i k a
Pr o p o s i s i
De f i n i s i

:

1. P e r n y a t a a n
k a l i ma t y a n
me mi l i k i a r
2. D i t u l i s d e n
h u r u f b e s a r
A ,B ,c ,d
3. N i l a i d a r i
p e r n y a t a a n
b i s a b e r n i l

= s u a t u
g
t i
g a n
/k e c i l

t e r s e b u t
a i b e n a r
L o g i k a
Pr o p o s i s i
Co n t o h :
1. B i l a n g a n b u l a t y a n g
m e m b a g i h a b i s 23 a d a l a h
1 d a n 23.

Bu k a n Pr o p o s i s i
1. A + B  5

:
L o g i k a
Pr o p o s i s i
De s k r i p s i
A =

Bi l a n g a n b u l a t y a n g
m e m b a g i h a b i s 23 a d a l a h 1 d a n
23.

A
me
me
d i
v a
pr

a t
n g
wa
s e
r i
op

a u
g a n
k i l
b u t
a bl
or s

l a i n n y a
y
t i k a n
a
i
p r o p o s
s e b a
e
i s i ona l

a
t
i
g

n
a
s
a

g
u
i
i
So a l
Pr opos i s i
buk a n ?
1. D e
2. B u
ma
p a
ma
Ma
3. A n
s i
4. T a

wi
d i
h a
n d
t a
t e
g k
a l
t i

a t a u

b e l a j a r
a d a l a h
s e o r a
s i s wa
y a
a i
p a
k u l i a h
ma t i k a D i s k r i t
a 13 a d a l a h a n g
,

c e p a t

n g
n g
d a

k a

k e r j a k a n
J a wa b a n
1. P e r n y a t a a n
k e
me n i mb u l k a n
p e r d e b a t a n
k a r e n
t i d a k
s e t i a p
o r a n
s e t u j u a d a j u g a y a n
t i d a k
p e r d u l i ,
a t a
t i d a k
j u g a
me mi l i k
a r t i
(b u k a
p r o p o s i s i )
2. P e r n y a t a a n k e -1 d a n 2
(m e r u p a k a n p r o p o s i s i

-3
a
g
g
u
i
n
)
Co n t o h So a l
“G a j a h l e b i h b e s a r
d a r i p a d a k u c i n g ”

?
s u a t ?u

I n i
p e r r n y a t a a n ?
?

I n i s u a t u p r o p o s i s i ?

Ap a
n i l a i
k e b e n a r a n n y a ?
L a t i h a n
1. “1089 < 101”
2. “y > 16”
3.
“B u l a n
Fe b r u a r i ”
4.
“J a n g a n
d i k e l a s ”
5.
“J i k a
b e r wa r n a
me r e k a

i n i
Ti d u r

g a j a h
h i j a u
d a p a t
J a wa b a n
“1089 < 101”

I n i
p e r n y a t a a
I n i?
n
p r o p o s i s i
A? a n i l a i
p
k e b e n a r a n
d a r i
p r o p o s i s i
i n i ?

y
? a

y a
?
s?
a
l
a
h
J a wa b a n
“y > 15”

I n i
p e r n y a t a a
I n i?
n
i s i
N p rl o p o ks e b e n a
i
a i
b? r g a n t u n g p
e
y , t a p i n i l a i
t i d a k s p e s i f
Ki t a k a t a k a n
p e r n y a t a a n i

y a
?

b u k
?
r a na n a
n y
a d a n i l a i
i n i
i k .
t i p e
n i a d a l a h
J a wa b a n
“B u l a n
i n i
f e b r u a
r i ”

I n i
p e r n y a t a a
I n i?
n
p r o p o s i s i
A? a n i l a i
p
k e b e n a r a n
d a r i
p r o p o s i s i
i n i ?

y
? a

y a
?

?

s a
l
a
h
J a wa b a n
“J a n g a n
t i d u r
d i
I n i
b?
u
p e r n k a t l aa s ”
y e
a
k a

I n i?
n
bn k
u
p r o p o s i s i
a n
H a ?n y a p e r n y a t a a n
y a n g d a p a t me n j a d i
p r o p o s i s i .

?
J a wa b a n
“J i k a g a j a h b e r w a r n a h i j a u ,
me r e k a d a p a t b e r l i n d u n g d i
b a w a h p o h o n b a mb u ”

A
k
p
t

I n i
p e r n y a t a a
I n i?
n
p r o p o s i s i
p a? n i l a i
e b e n a r a n
r o p o s i s i
e r s e b u t ?

Ya
?

?
Ya

?

p r o b a b
l y
f a l s e
L o g i k a
Pr o p o s i s i
Ma c a m :
1. P r o p o s i s i t u n g g a l
(a t o m i c )
Pr o p o s i y a n g h a n y a
b e r i s i s a t u
v a r i a b l e a t a u s a t u
k o n s t a n t a
p r o p o r s i s i o n a l
2. P r o r o p i s i m a j e m u k
(c o m p o u n d )
L o g i k a
Pr o p o s i s i
Co n t o h :
1. P r o p o s i s i t u n g
(a t o m i c )
S e t i a p ma h a s i s
S I S T E M I N F O R MA
c e r d a s
2. P r o p o s i s i m a j e
(c o m p o u n d )
Bo n o k a y a r a y a

g a l
wa
SI
mu k
da n
L o g i k a
Pr o p o s i s i
P e n g h u b u n g L o g i k a (L o g i c a l
Co n n e c t i v e s ) :
1. T i d a k /N o t /N e g a s i
S i mb o l

2. D a n /A n d /K o n j u n g s i
S i mb o l

3. A t a u /O r /D i s j u n g s i
S i mb o l

4. I m p l i k a s i
S i mb o l

5. B i -I m p l i k a s i
S i mb o l

6. E x c l u s i v e O R (X O R )
L o g i k a
Pr o p o s i s i
Hi r a r k i
Hirarkie - n g h u Nama u n g
P ke Simbol
b
:
1



Negasi

tidak ….

2



Konjungsi

…. dan ….

3



Disjungsi
(XOR)

.... atau ….

4



Implikasi /
Conditional

.... jika …. Maka

5



Ekuivalensi / Bi Implikasi
/ Bi Conditional

.... bila dan hanya bila ….
Ta b e l
Ke b e n a r a n


De
Me
y a
s i
s a
k e
k o
p r
y a

f i
r u
n g
s t
t u
b e
mb
o p
n g

ni s
p a k
me
e ma

i
a n
s a t u
t
n u n j u k a n s e
t i s
s a t u
n i l a i -n
n a r a n s e b a g a i h
i n a s i
o s i s i -p r o p o s i s i
s e d e r h a n a .

a
c
d
i
a
d

b
a
e
l
s
a

e l
r a
mi
a i
i l
r i
Ta b e l
Ke b e n a r a n


Ta be l

Ke b e n a r a n Ne g a s i

p

p

0

1

1

0

Co n t o h :
p = Bu d i s e o r a n g
ma h a s i s w a
p = B u d i b u k a n s e o r a n g
ma h a s i s w a
Ta b e l
Ke b e n a r a n


Ta be l
p
K o n jq u p ^ q s i
ng


0

0

0


0

1

1

1

0

1

1

1

1

Ke b e n a r a n
P
:
H a r i ma u
a d a l a h
b i n a t a n g b u a s
q
:
Ma l a n g
a d a l a h
i b u k o t a J a w a T i mu r

p q
: H a r i ma u
a d a l a h
b
D ei f ni ant i asni g : b u  q a k a n
p a s d a n
b e n a r aj l i aknag d a n h a n y a l a h
M
a d
i b j i k a ak e d u a nTyi am u r
u k o t
J a w
be r ni l a i be na r
da n j i k a l a i nny a
pa s t i s a l a h


Tabel Kebenaran


Tabel Kebenaran Disjungsi
p

q

pvq

0

0

0

0

1

0

1

0

0

1

1

1

p
: Bono seorang mahasiswa
q
: Wira seorang sarjana teknik
p v q : Bono seorang mahasiswa atau
Wira seorang sarjana teknik
Definisi : p  q akan benar jika dan
Salah satu diantaranya adalah benar
dan jika lainnya pasti salah
Tabel Kebenaran


Tabel Kebenaran Implikasi
p

q

pq

0

0

0

0

1

1

1

0

0

1

1

0

p
: Bono seorang mahasiswa
q
: Wira seorang sarjana teknik
p  q: jika Bono seorang mahasiswa
maka Wira seorang sarjana teknik

antecendent  consequent
hipotesis  kesimpulan
Definisi : p  q akan salah jikanilai p
bernilai benar dan nilai q bernilai salah
dan jika lainnya pasti benar
Tabel Kebenaran


Tabel Kebenaran Bi Implikasi
p

q

p p

0

0

0

0

1

0

1

0

0

1

1

1

Definisi : Proposisi yang bernilai benar
Jika p bernilai benar dan q bernilai benar
Jika p bernilai salah dan q bernilai salah
Dan lainnya pasti salah
L o g i k a
Pr o p o s i s i
Co n t o h Pe n e r a p a n :
p :
k
q :
b
Mo
k u
k e
d a
d e

mo
u r
mo
a h
t
r
h
p
n

o
a
a
a
g

t
a
t
a
r
n
b
t
a

o
n
o
n

r
g
r
b

i
a
i
a

t
n
t
k

u
g
u
a

b a n n y a
i n
k e h a b i s a n
r

i t u b a n n y a
g a n g i n d a n
i s a n b a h a n b a k a r
d i s i mb o l k a n
n
L o g i k a
Pr o p o s i s i
Co n t o h :
D e n g a n k o n d i s i s a ma
s i mb o l k a n l a h
p e r n y a t a a n b e r i k u t
1. M o
k e
b a
k u
2. T i
mo

t
h
k
r
d
t

o
a
a
a
a
o

r
b
r
n
k
r

i t u t i d a k
i s a n b a h a n
t a p i b a n n y a
g a n g i n
b e n a r b a h wa
i t u k e h a b i s a n

:
L o g i k a
Pr o p o s i s i
p =
k
q =
k

Mo t
e h a
Mo t
u r a

o r i t u t i d a k
b i s a n b a h a n b a k a r
o r i t u b a n n y a
n g a n g i n
L o g i k a
Pr o p o s i s i
Sol us i
Mo
k e
t a
a n

t
h
p
g

o
a
i
i

Ti
mo
b a
b a

d
t
h
n

a
o
a
n

:

r i t u t i d a k
b i s a n b a h a n b
b a n n y a k u r a n
n
q  p
k b e n a r b a h wa
r i t u k e h a b i s
n b a k a r da n
y a k u r a n g a n g

a k a r
g

a n
i n
2
p

q

ppvq

T

T

T

T

F

T

F

T

T

F

F

T
K e s i mp u l a n
3
p

p ^ (~p)

T

F

F

F
p

T

pT

T

T

T

F

T

F
49
Pembuktian Ekuivalensi
p

q

p

q

~p

pVq

p Λq

p => q

B

B

S

B

B

B

B

B

S

S

B

S

S

S

S

B

B

B

S

B

S

S

S

B

S

S

B

B
Matematika Diskrit
Matematika Diskrit

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Matematika Diskrit

  • 1.
  • 2.
  • 3. L o g i k a Pr o p o s i s i Tuj ua n : Ma me l o o p p r h n g e o a y i r p s e k a o i b a t s s wa d a u t k a n p r o p o o r d a n i s i p a t t e n t a n g s i s i , s i f a t
  • 4. 1
  • 5. Pr o p o s i s i De f i n i s i : •Se t i a p p e r n y a n g h a n y a me s a t u n i l a i a t a u s a l a h . • d i s i mb o l k a n me n g g u n a k a n h u • Pe r n y a t a a n me mi l i k i ma k n a • Di s e b u t s e b a g a i k y a t a a n mi l i k i b e n a r r u f y /a r t j a l i a n g i u g a ma t
  • 6. L o g i k a Pr o p o s i s i De f i n i s i L o me a t p e s e p r g n a n c o i a u a a p : k a n g a n i , me mp r me ma n i p u r i k a n k e s i mp r a l o g i s o s i s i y o l u d a s a l a n e s a r g s i n i
  • 7. L o g i k a Pr o p o s i s i De f i n i s i : 1. P e r n y a t a a n k a l i ma t y a n me mi l i k i a r 2. D i t u l i s d e n h u r u f b e s a r A ,B ,c ,d 3. N i l a i d a r i p e r n y a t a a n b i s a b e r n i l = s u a t u g t i g a n /k e c i l t e r s e b u t a i b e n a r
  • 8. L o g i k a Pr o p o s i s i Co n t o h : 1. B i l a n g a n b u l a t y a n g m e m b a g i h a b i s 23 a d a l a h 1 d a n 23. Bu k a n Pr o p o s i s i 1. A + B  5 :
  • 9. L o g i k a Pr o p o s i s i De s k r i p s i A = Bi l a n g a n b u l a t y a n g m e m b a g i h a b i s 23 a d a l a h 1 d a n 23. A me me d i v a pr a t n g wa s e r i op a u g a n k i l b u t a bl or s l a i n n y a y t i k a n a i p r o p o s s e b a e i s i ona l a t i g n a s a g u i i
  • 10. So a l Pr opos i s i buk a n ? 1. D e 2. B u ma p a ma Ma 3. A n s i 4. T a wi d i h a n d t a t e g k a l t i a t a u b e l a j a r a d a l a h s e o r a s i s wa y a a i p a k u l i a h ma t i k a D i s k r i t a 13 a d a l a h a n g , c e p a t n g n g d a k a k e r j a k a n
  • 11. J a wa b a n 1. P e r n y a t a a n k e me n i mb u l k a n p e r d e b a t a n k a r e n t i d a k s e t i a p o r a n s e t u j u a d a j u g a y a n t i d a k p e r d u l i , a t a t i d a k j u g a me mi l i k a r t i (b u k a p r o p o s i s i ) 2. P e r n y a t a a n k e -1 d a n 2 (m e r u p a k a n p r o p o s i s i -3 a g g u i n )
  • 12. Co n t o h So a l “G a j a h l e b i h b e s a r d a r i p a d a k u c i n g ” ? s u a t ?u I n i p e r r n y a t a a n ? ?  I n i s u a t u p r o p o s i s i ?  Ap a n i l a i k e b e n a r a n n y a ?
  • 13. L a t i h a n 1. “1089 < 101” 2. “y > 16” 3. “B u l a n Fe b r u a r i ” 4. “J a n g a n d i k e l a s ” 5. “J i k a b e r wa r n a me r e k a i n i Ti d u r g a j a h h i j a u d a p a t
  • 14. J a wa b a n “1089 < 101” I n i p e r n y a t a a I n i? n p r o p o s i s i A? a n i l a i p k e b e n a r a n d a r i p r o p o s i s i i n i ? y ? a y a ? s? a l a h
  • 15. J a wa b a n “y > 15” I n i p e r n y a t a a I n i? n i s i N p rl o p o ks e b e n a i a i b? r g a n t u n g p e y , t a p i n i l a i t i d a k s p e s i f Ki t a k a t a k a n p e r n y a t a a n i y a ? b u k ? r a na n a n y a d a n i l a i i n i i k . t i p e n i a d a l a h
  • 16. J a wa b a n “B u l a n i n i f e b r u a r i ” I n i p e r n y a t a a I n i? n p r o p o s i s i A? a n i l a i p k e b e n a r a n d a r i p r o p o s i s i i n i ? y ? a y a ? ? s a l a h
  • 17. J a wa b a n “J a n g a n t i d u r d i I n i b? u p e r n k a t l aa s ” y e a k a I n i? n bn k u p r o p o s i s i a n H a ?n y a p e r n y a t a a n y a n g d a p a t me n j a d i p r o p o s i s i . ?
  • 18. J a wa b a n “J i k a g a j a h b e r w a r n a h i j a u , me r e k a d a p a t b e r l i n d u n g d i b a w a h p o h o n b a mb u ” A k p t I n i p e r n y a t a a I n i? n p r o p o s i s i p a? n i l a i e b e n a r a n r o p o s i s i e r s e b u t ? Ya ? ? Ya ? p r o b a b l y f a l s e
  • 19. L o g i k a Pr o p o s i s i Ma c a m : 1. P r o p o s i s i t u n g g a l (a t o m i c ) Pr o p o s i y a n g h a n y a b e r i s i s a t u v a r i a b l e a t a u s a t u k o n s t a n t a p r o p o r s i s i o n a l 2. P r o r o p i s i m a j e m u k (c o m p o u n d )
  • 20. L o g i k a Pr o p o s i s i Co n t o h : 1. P r o p o s i s i t u n g (a t o m i c ) S e t i a p ma h a s i s S I S T E M I N F O R MA c e r d a s 2. P r o p o s i s i m a j e (c o m p o u n d ) Bo n o k a y a r a y a g a l wa SI mu k da n
  • 21. L o g i k a Pr o p o s i s i P e n g h u b u n g L o g i k a (L o g i c a l Co n n e c t i v e s ) : 1. T i d a k /N o t /N e g a s i S i mb o l  2. D a n /A n d /K o n j u n g s i S i mb o l  3. A t a u /O r /D i s j u n g s i S i mb o l  4. I m p l i k a s i S i mb o l  5. B i -I m p l i k a s i S i mb o l  6. E x c l u s i v e O R (X O R )
  • 22. L o g i k a Pr o p o s i s i Hi r a r k i Hirarkie - n g h u Nama u n g P ke Simbol b : 1  Negasi tidak …. 2  Konjungsi …. dan …. 3  Disjungsi (XOR) .... atau …. 4  Implikasi / Conditional .... jika …. Maka 5  Ekuivalensi / Bi Implikasi / Bi Conditional .... bila dan hanya bila ….
  • 23. Ta b e l Ke b e n a r a n  De Me y a s i s a k e k o p r y a f i r u n g s t t u b e mb o p n g ni s p a k me e ma i a n s a t u t n u n j u k a n s e t i s s a t u n i l a i -n n a r a n s e b a g a i h i n a s i o s i s i -p r o p o s i s i s e d e r h a n a . a c d i a d b a e l s a e l r a mi a i i l r i
  • 24. Ta b e l Ke b e n a r a n  Ta be l Ke b e n a r a n Ne g a s i p p 0 1 1 0 Co n t o h : p = Bu d i s e o r a n g ma h a s i s w a p = B u d i b u k a n s e o r a n g ma h a s i s w a
  • 25. Ta b e l Ke b e n a r a n  Ta be l p K o n jq u p ^ q s i ng  0 0 0  0 1 1 1 0 1 1 1 1 Ke b e n a r a n P : H a r i ma u a d a l a h b i n a t a n g b u a s q : Ma l a n g a d a l a h i b u k o t a J a w a T i mu r p q : H a r i ma u a d a l a h b D ei f ni ant i asni g : b u  q a k a n p a s d a n b e n a r aj l i aknag d a n h a n y a l a h M a d i b j i k a ak e d u a nTyi am u r u k o t J a w be r ni l a i be na r da n j i k a l a i nny a pa s t i s a l a h 
  • 26. Tabel Kebenaran  Tabel Kebenaran Disjungsi p q pvq 0 0 0 0 1 0 1 0 0 1 1 1 p : Bono seorang mahasiswa q : Wira seorang sarjana teknik p v q : Bono seorang mahasiswa atau Wira seorang sarjana teknik Definisi : p  q akan benar jika dan Salah satu diantaranya adalah benar dan jika lainnya pasti salah
  • 27. Tabel Kebenaran  Tabel Kebenaran Implikasi p q pq 0 0 0 0 1 1 1 0 0 1 1 0 p : Bono seorang mahasiswa q : Wira seorang sarjana teknik p  q: jika Bono seorang mahasiswa maka Wira seorang sarjana teknik antecendent  consequent hipotesis  kesimpulan Definisi : p  q akan salah jikanilai p bernilai benar dan nilai q bernilai salah dan jika lainnya pasti benar
  • 28. Tabel Kebenaran  Tabel Kebenaran Bi Implikasi p q p p 0 0 0 0 1 0 1 0 0 1 1 1 Definisi : Proposisi yang bernilai benar Jika p bernilai benar dan q bernilai benar Jika p bernilai salah dan q bernilai salah Dan lainnya pasti salah
  • 29. L o g i k a Pr o p o s i s i Co n t o h Pe n e r a p a n : p : k q : b Mo k u k e d a d e mo u r mo a h t r h p n o a a a g t a t a r n b t a o n o n r g r b i a i a t n t k u g u a b a n n y a i n k e h a b i s a n r i t u b a n n y a g a n g i n d a n i s a n b a h a n b a k a r d i s i mb o l k a n n
  • 30. L o g i k a Pr o p o s i s i Co n t o h : D e n g a n k o n d i s i s a ma s i mb o l k a n l a h p e r n y a t a a n b e r i k u t 1. M o k e b a k u 2. T i mo t h k r d t o a a a a o r b r n k r i t u t i d a k i s a n b a h a n t a p i b a n n y a g a n g i n b e n a r b a h wa i t u k e h a b i s a n :
  • 31. L o g i k a Pr o p o s i s i p = k q = k Mo t e h a Mo t u r a o r i t u t i d a k b i s a n b a h a n b a k a r o r i t u b a n n y a n g a n g i n
  • 32. L o g i k a Pr o p o s i s i Sol us i Mo k e t a a n t h p g o a i i Ti mo b a b a d t h n a o a n : r i t u t i d a k b i s a n b a h a n b b a n n y a k u r a n n q  p k b e n a r b a h wa r i t u k e h a b i s n b a k a r da n y a k u r a n g a n g a k a r g a n i n
  • 33. 2
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  • 36. K e s i mp u l a n
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  • 51. Pembuktian Ekuivalensi p q p q ~p pVq p Λq p => q B B S B B B B B S S B S S S S B B B S B S S S B S S B B

Editor's Notes

  1. Any writer or designer will tell you that 90% of the creative process…
  2. …is destructive.