GreenHerbz206 GreenHerbz206

05-11-2018
Mathematics

contestada

given rule an= 2(n 2 + 2n), find the first term in the sequence

A. 4
B. 6
C. 8
D. 16

Respuesta :

06-11-2018

[tex]a_n=2(n^2+2n)\\\\a_1-first\ term\to n=1\\\\a_n=2(1^2+2\cdot1)=2(1+2)=2(3)=6\\\\Answer:\ \boxed{B.\ 6}[/tex]

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