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Materi : Barisan dan Geometri
Pola barisan beda
2, 6, 9, 5, 8, 11, 7, 10, ...
Pola beda
+4, +3, -4, +3, +4, +3, -4, ...
Pola ganjil
+4 => U1, U5, U9, ... [ 4n - 3 ]
-4 => U3, U7, U11, ... [ 4n - 1 ]
Pola genap
+3 => U2, U4, U6, ... [ 2n ]
Hasil / Result :
U6 = genap = U5 + 3 = 8 + 3 = 11
U7 = ganjil(-4) = U6 - 4 = 11 - 4 = 7
U8 = genap = U7 + 3 = 7 + 3 = 10
Semoga bisa membantu
[tex] \boxed{ \colorbox{navy}{ \sf{ \color{lightblue}{ Answer\:by\: BLUEBRAXGEOMETRY}}}} [/tex]
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