Jawaban:
U4 = 128
U7 = 8192
Penjelasan dengan langkah-langkah:
tertera di gambar
Barisan geometri
2,8,32,...
a = 2
[tex]r = \frac{u2}{u1} = \frac{8}{2} = 4 \\ \\ un = a. {r}^{n - 1} \\ un = 2. {4}^{n - 1} \\ u4 = 2. {4}^{4 - 1} \\ u4 = 2. {4}^{3} \\ u4 = 2(64) \\ u4 = 128 \\ \\ un = 2. {4}^{n - 1} \\ u7 = 2. {4}^{7 - 1} \\ u7 = 2. {4}^{6} \\ u7 = 2(4.096) \\ u7 = 8.192[/tex]
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Jawaban:
U4 = 128
U7 = 8192
Penjelasan dengan langkah-langkah:
tertera di gambar
Barisan geometri
2,8,32,...
a = 2
[tex]r = \frac{u2}{u1} = \frac{8}{2} = 4 \\ \\ un = a. {r}^{n - 1} \\ un = 2. {4}^{n - 1} \\ u4 = 2. {4}^{4 - 1} \\ u4 = 2. {4}^{3} \\ u4 = 2(64) \\ u4 = 128 \\ \\ un = 2. {4}^{n - 1} \\ u7 = 2. {4}^{7 - 1} \\ u7 = 2. {4}^{6} \\ u7 = 2(4.096) \\ u7 = 8.192[/tex]