puppylox18 puppylox18
  • 14-09-2022
  • Mathematics
contestada

PLEASEEE HELPP
If a₁ = 10 and an
10 and an = -4an-1 then find the value of a4.

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subtomex0
subtomex0 subtomex0
  • 14-09-2022

Given the recursive relation:

[tex]a_{n}=-4a_{n-1}[/tex]

[tex]a_{2}=-4a_{2-1} = -4a_{1} = - 4(10) = -40 \\ a_{3}=-4a_{3-1} = -4a_{2} = - 4( -4 0) = 160 \\ a_{4}=-4a_{4-1} = -4a_{3} = - 4(160) = -640[/tex]

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