Barisan Aritmatika Lesson

13 Slides • 8 Questions

1

BARISAN DAN DERET ARITMATIKA

Kelas X

SMKN 1 Anjatan

By : Dadang Muliadi Iriana, M.Pd.

2

By : Dadang Muliadi Iriana, M.Pd.

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Tujuan Pembelajaran :

Setelah mengikuti pembelajaran ini, siswa diharapkan dapat :

Menemukan konsep Barisan Aritmatika pada masalah kontekstual
Menjelaskan definisi Barisan Aritmatika
Menemukan aturan/rumus suku ke-n dari Barisan Aritmatika
Menyajikan dan meyelesaikan permasalahan kontekstual yang berkaitan dengan suku ke-n Barisan Aritmatika

4

Menemukan konsep Barisan Aritmatika pada Masalah Kontekstual

Perhatikan video berikut!

(sampai menit ke 1.26)

5

6

Fill in the Blanks

Type answer...

7

Menjelaskan Definisi Barisan Aritmatika

Perhatikan penjelasan dalam slide berikut!

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9

10

Multiple Select

Perhatikan barisan bilangan berikut!

Manakah yang termasuk Barisan Aritmatika ?

1

3, 7, 11, 15, 19, 23

2

12, 17, 22, 27, 30, 37

3

2, 4, 8, 16, 32

4

60, 50, 40, 30, 20, 10

11

12

Multiple Choice

Diketahui barisan (k+1), (2k+4), (6k-2) membentuk barisan aritmatika, jika nilai k = ....

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2

3

4

5

13

Menentukan rumus suku ke-n Barisan Aritmatika

Perhatikan penjelasan dalam slide berikut!

14

15

Fill in the Blanks

Type answer...

16

Multiple Choice

Suatu barisan aritmatika mempunyai b = 3. Jika nilai $U_6=24$ maka nilai $U_{14}$ adalah ....

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38

2

45

3

48

4

51

5

53

17

18

Multiple Choice

Diketahui Barisan Aritmatika :
$U_1\ ,\ U_2\ ,\ U_3\ ,\ U_4\ ,\ .....,\ U_{20}$
Jika nilai U4 diketahui maka U20 dapat dinyatakan dalam bentuk .....

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$U_{20}=U_4\ +\ 14b$

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$U_{20}=U_4\ +\ 15b$

3

$U_{20}=U_4\ +\ 16b$

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$U_{20}=U_4\ +\ 19b$

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$U_{20}=U_4\ +\ 20b$

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Multiple Choice

Suku ke-n dari barisan 8, 14, 20, 26, …… adalah ….
Jawab :
$U_n=U_1+\left(n-1\right)b$

$U_n=8\ +\left(n-1\right)6\ =\ .....$

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n + 7

2

6n - 1

3

6n + 1

4

6n - 2

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6n + 2

20

21

Fill in the Blanks

Type answer...

BARISAN DAN DERET ARITMATIKA

Kelas X

SMKN 1 Anjatan

By : Dadang Muliadi Iriana, M.Pd.

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