Dua suku berikutnya dari pola bilangan 1, 2, 4, 7, 11, 16, ... adalah ...

<p>Hallo Nesya ,izin menjawab ya.</p><p>Penyelesaian Soal.</p><p>Ditanya 2 suku?<br>Cara cepat ↓</p><p>Pola bilangan</p><p>1, &nbsp; 2, &nbsp; 4, &nbsp; 7, &nbsp; 11, &nbsp; 16, &nbsp;22, &nbsp;29</p><p>+1 &nbsp;+2 &nbsp;+3 &nbsp;+4 &nbsp;+5 &nbsp; +6 &nbsp; +7</p><p>Atau kita cari Rumus suku ke-n terlebih dahulu</p><p>1, &nbsp; 2, &nbsp; 4, &nbsp; 7, &nbsp; 11, &nbsp; 16,</p><p>+1 &nbsp;+2 &nbsp;+3 &nbsp;+4 &nbsp;+5 &nbsp;</p><p>&nbsp; &nbsp;+1 &nbsp; +1 &nbsp; +1 &nbsp; +1</p><p>2a = 1</p><p>a = 1 : 2</p><p>a = 1/2</p><p>3a + b = 1</p><p>3.1/2 &nbsp;+ b = 1 &nbsp;</p><p>3/2+ b = 1</p><p>&nbsp; &nbsp;b = 1 - 3/2</p><p>&nbsp; &nbsp; b = 1/-2</p><p>a + b + c = 1</p><p>1/2 - 1/2 + c = 1</p><p>0 + c = 1</p><p>c = 1</p><p>Rumus pola diatas Un = 1/2n² - 1/2n + 1</p><p>U₇ = 1/2.7² - 1/2.7 + 1</p><p>&nbsp; &nbsp;= &nbsp;49/2 -- 7/2 &nbsp;+ 1</p><p>&nbsp; &nbsp;= &nbsp;42/2 + 1</p><p>&nbsp; &nbsp;= 21 + 1</p><p>&nbsp; &nbsp;= 22.</p><p>U₈ = .8² - .8 + 1</p><p>&nbsp; &nbsp;= 64/2 - 8/2 + 1</p><p>&nbsp; &nbsp;= 56/2 + 1</p><p>&nbsp; &nbsp;= 28 + 1</p><p>&nbsp; &nbsp;= 29.</p><p>Dengan demikian jawaban yang tepat adalah Dua suku berikutnya dari barisan 1, 2, 4, 7, 11, 16, ... Adalah <strong>22, 29.</strong></p>