
Definisi Nilai Mutlak
Presentation
•
Mathematics
•
10th Grade
•
Easy
Siti Sri Shofiati
Used 1+ times
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12 Slides • 2 Questions
1
Definisi Nilai Mutlak
by Siti Sri Shofiati, S.Pd.
2
Definisi
Misalkan x adalah bilangan real.
Nilai mutlak dari suatu bilangan x ditulis |x| dan didefinisikan sebagai berikut:
3
Contoh 1:
Dengan menggunakan definisi nilai mutlak, tentukan nilai dari bentuk mutlak berikut.
a. |7| b. |-4| c. |0|
Pembahasan:
a. |7| = 7, karena
b. |-4| = -(-4) = 4, karena
c. |0| = 0, karena
4
Contoh 2
Dengan menggunakan definisi nilai mutlak, tentukan nilai dari bentuk mutlak
Pembahasan:
karena
Dengan demikian,
maka
5
Contoh 3
Dengan menggunakan definisi nilai mutlak, tentukan nilai dari bentuk mutlak
Pembahasan:
Karena
maka
dan
maka
Sehingga
6
Contoh 4
Tuliskan fungsi f(x) = |x - 4| dalam bentuk definisi nilai mutlak.
Pembahasan:
7
Contoh 5
Tuliskan fungsi f(x) = |3x + 1| dalam bentuk definisi nilai mutlak.
Pembahasan:
8
9
Open Ended
Tuliskan fungsi f(x) = |2x - 16| dalam bentuk definisi nilai mutlak
10
Contoh 6
11
Contoh 7
12
Contoh 8
13
14
Open Ended
Tuliskan bentuk sederhana dari |2x + 3| + |12 - 3x| jika x > 4
Definisi Nilai Mutlak
by Siti Sri Shofiati, S.Pd.
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