baris geometri
TRANSCRIPT
![Page 1: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/1.jpg)
Baris dan Deret Geometri
![Page 2: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/2.jpg)
Apa itu
BARIS GEOMETRI??
Apa itu
BARIS GEOMETRI??
![Page 3: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/3.jpg)
Tahukah anda gambar ini?
![Page 4: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/4.jpg)
![Page 5: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/5.jpg)
Buatlah kelompok
masing-masing
Buatlah kelompok
masing-masing
![Page 6: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/6.jpg)
![Page 7: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/7.jpg)
Hitunglah banyak segitiga yangterbentuk
![Page 8: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/8.jpg)
![Page 9: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/9.jpg)
u1 u2 u3 u4 u5
a ar ar2 ar3 ar4
r r r r
u1 u2 u3 u4 u5
a ar ar2 ar3 ar4
r r r r
u1 u2 u3 u4 u5
a ar ar2 ar3 ar4
r r r r
u1 u2 u3 u4 u5
a ar ar2 ar3 ar4
r r r r
![Page 10: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/10.jpg)
![Page 11: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/11.jpg)
• Ket :
• a =u1 = suku pertama
• u2 = suku kedua
• un = suku ke- n
• r = rasio
• Ket :
• a =u1 = suku pertama
• u2 = suku kedua
• un = suku ke- n
• r = rasio
Un= arn-1
![Page 12: Baris geometri](https://reader031.vdocuments.site/reader031/viewer/2022012322/55851ccad8b42ae4748b4849/html5/thumbnails/12.jpg)
Contoh :Tentukan suku pertama ,rasio,dan suku ke 6 pada barisanbarisan geometri berikut ini 27,9,3,1
Jawab :27, 9, 3,1 suku ke-6 (u6
u1 u2 u3 u4 Un= arn-1
suku pertama (u1) = 27 u6 = ar5
rasio = u2/u1 =9/27 =1/3 = 27. (1/3)5
= 27 . (1/243)= 27/243
• ==
••••••
Contoh :Tentukan suku pertama ,rasio,dan suku ke 6 pada barisanbarisan geometri berikut ini 27,9,3,1
Jawab :27, 9, 3,1 suku ke-6 (u6
u1 u2 u3 u4 Un= arn-1
suku pertama (u1) = 27 u6 = ar5
rasio = u2/u1 =9/27 =1/3 = 27. (1/3)5
= 27 . (1/243)= 27/243
• ==
••••••