10-a-Day the Easy Way: Fuss-free Recipes & Simple Science to Transform your Health

10-a-Day the Easy Way: Fuss-free Recipes & Simple Science to Transform your Health

Matematika Di ketahui barisan geometri 2,8,32... tentukan Suku ke 14 dan 14 suku pertamanya​

Di ketahui barisan geometri 2,8,32... tentukan Suku ke 14 dan 14 suku pertamanya​

Penjelasan dengan langkah-langkah:

r = 8/2 = 4

a = 2

n = 14

  • suku ke-14?

Un = a × rⁿ-¹

U14 = 2 × 4¹⁴-¹

U14 = 2 × 67.108.864

U14 = 134.217.728

  • 14 suku pertamnya?

Sn = a(rⁿ - 1)/r - 1

S14 = 2(4¹⁴ - 1)/4 - 1

S14 = 2(268.435.456 - 1)/4 - 1

S14 = 2(268.435.455)/3

S14 = 536.870.910/3

S14 = 178.956.970

Penjelasan dengan langkah-langkah:

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[tex] \\ \\ \\ \\ \\ \\ \\ \\ [/tex]

[tex]Un = a. {r}^{n - 1} [/tex]

[tex]U14 = 2. {6}^{14 - 1} [/tex]

[tex]U14 = 2. {6}^{13} [/tex]

[tex]U14 = 2 \times 13.060.694.016 \\ [/tex]

[tex] \bf \red {U14 = 26.121.388.032} \\[/tex]

[tex] \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]

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