Respuesta :

loneguy

[tex]\\\text{Given that} ~a_1 = 3 \\\\a_n = -2 a_{n -1}\\\\a_1 = 3\\\\a_2 = -2 a_{2-1} = -2 a_1 = -2(3)= -6\\\\a_3 = -2a_{3-1} = -2 a_2 = -2(-6) = 12\\\\a_4 = -2 a_{4-1} = -2 a_3 = -2 (12) =-24[/tex]

Hence 3, -6 , 12 , -24

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