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Diberikan bentuk rekursif dari barisan Fibonacci seperti berikut. a. Carilah nilai dari F 20 ​ dan F 30 ​

Diberikan bentuk rekursif dari barisan Fibonacci seperti berikut.

begin mathsize 14px style F subscript n equals open curly brackets table row cell 1 semicolon n equals 1 blank d a n blank n equals 2 end cell row cell F subscript n minus 2 end subscript plus F subscript n minus 1 end subscript semicolon n greater or equal than 3 end cell end table close end style 

a. Carilah nilai dari  dan  

  1. ...undefined 

  2. ...undefined 

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N. Ayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Padang

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nilai dan .

nilai begin mathsize 14px style F subscript 20 equals 6765 end style dan begin mathsize 14px style F subscript 30 equals 832040 end style.

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Perhatikan rekursif berikut ini. Maka: Jadi, nilai dan .

Perhatikan rekursif berikut ini.

begin mathsize 14px style F subscript n equals open curly brackets table row cell 1 semicolon n equals 1 blank d a n blank n equals 2 end cell row cell F subscript n minus 2 end subscript plus F subscript n minus 1 end subscript semicolon n greater or equal than 3 end cell end table close end style

Maka:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell F subscript 3 end cell equals cell F subscript 1 plus F subscript 2 equals 1 plus 1 equals 2 end cell row cell F subscript 4 end cell equals cell F subscript 2 plus F subscript 3 equals 1 plus 2 equals 3 end cell row cell F subscript 5 end cell equals cell F subscript 3 plus F subscript 4 equals 2 plus 3 equals 5 end cell row cell F subscript 6 end cell equals cell F subscript 4 plus F subscript 5 equals 3 plus 5 equals 8 end cell row cell F subscript 7 end cell equals cell F subscript 5 plus F subscript 6 equals 5 plus 8 equals 13 end cell row cell F subscript 8 end cell equals cell F subscript 6 plus F subscript 7 equals 8 plus 13 equals 21 end cell row cell F subscript 9 end cell equals cell F subscript 7 plus F subscript 8 equals 13 plus 21 equals 34 end cell row cell F subscript 10 end cell equals cell F subscript 8 plus F subscript 9 equals 21 plus 34 equals 55 end cell row cell F subscript 11 end cell equals cell F subscript 9 plus F subscript 10 equals 34 plus 55 equals 89 end cell row cell F subscript 12 end cell equals cell F subscript 10 plus F subscript 11 equals 55 plus 89 equals 144 end cell row cell F subscript 13 end cell equals cell F subscript 11 plus F subscript 12 equals 89 plus 144 equals 233 end cell row cell F subscript 14 end cell equals cell F subscript 12 plus F subscript 13 equals 144 plus 233 equals 377 end cell row cell F subscript 15 end cell equals cell F subscript 13 plus F subscript 14 equals 233 plus 377 equals 610 end cell row cell F subscript 16 end cell equals cell F subscript 14 plus F subscript 15 equals 377 plus 610 equals 987 end cell row cell F subscript 17 end cell equals cell F subscript 15 plus F subscript 16 equals 610 plus 987 equals 1597 end cell row cell F subscript 18 end cell equals cell F subscript 16 plus F subscript 17 equals 987 plus 1597 equals 2584 end cell row cell F subscript 19 end cell equals cell F subscript 17 plus F subscript 18 equals 1597 plus 2584 equals 4181 end cell row cell F subscript 20 end cell equals cell F subscript 18 plus F subscript 19 equals 2584 plus 4181 equals 6765 end cell row cell F subscript 21 end cell equals cell F subscript 19 plus F subscript 20 equals 4181 plus 6765 equals 10946 end cell row cell F subscript 22 end cell equals cell F subscript 20 plus F subscript 21 equals 6765 plus 10946 equals 17711 end cell row cell F subscript 23 end cell equals cell F subscript 21 plus F subscript 22 equals 10946 plus 17711 equals 28657 end cell row cell F subscript 24 end cell equals cell F subscript 22 plus F subscript 23 equals 17711 plus 28657 equals 46368 end cell row cell F subscript 25 end cell equals cell F subscript 23 plus F subscript 24 equals 28657 plus 46368 equals 75025 end cell row cell F subscript 26 end cell equals cell F subscript 24 plus F subscript 25 equals 46368 plus 75025 equals 121393 end cell row cell F subscript 27 end cell equals cell F subscript 25 plus F subscript 26 equals 75025 plus 121393 equals 196418 end cell row cell F subscript 28 end cell equals cell F subscript 26 plus F subscript 27 equals 121393 plus 196418 equals 317811 end cell row cell F subscript 29 end cell equals cell F subscript 27 plus F subscript 28 equals 196418 plus 317811 equals 541229 end cell row cell F subscript 30 end cell equals cell F subscript 28 plus F subscript 29 equals 317811 plus 541229 equals 832040 end cell row blank blank blank end table end style

Jadi, nilai begin mathsize 14px style F subscript 20 equals 6765 end style dan begin mathsize 14px style F subscript 30 equals 832040 end style.

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Diberikan bentuk rekursif dari barisan Fibonacci seperti berikut. b.Tunjukkan bahwa: F 100 ​ + F 101 ​ + F 102 ​ = 2 ( F 100 ​ + F 101 ​ )

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