madilynmartinez madilynmartinez

13-11-2016
Mathematics

contestada

What are the first four solutions to the sequence: f(1) = 4 and f(n) = 2*f(n-1)+3

Respuesta :

KatsuekiX KatsuekiX

13-11-2016

f(1) = 4 is given

f(2) = 2*f(2-1)+3
= 2*f(1)+3
= 2*4+3
= 8+3
= 11
f(3) = 2*f(3-1)+3
= 2*f(2)+3
= 2*11+3
= 22+3
= 25
f(4) = 2*f(4-1)+3
= 2*f(3)+3
= 2*25+3
= 50+3
= 53
f(5) = 2*f(5-1)+3
= 2*f(4)+3
= 2*53+3
= 106+3
= 109

f(1) = 4
f(2) = 11
f(3) = 25
f(4) = 53
f(5) = 109

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