carringtonmoorp7dvji carringtonmoorp7dvji
  • 12-05-2019
  • Mathematics
contestada

PLEASE HELP RIGHT AWAY

PLEASE HELP RIGHT AWAY class=

Respuesta :

sylvain96
sylvain96 sylvain96
  • 12-05-2019

Answer:

-20

Step-by-step explanation:

Unfortunately, there is no shortcut to solve these... you have to do the work, iteration by iteration.

A recursive function is a function that calls itself and takes as input the output of the previous call.

a = -2 a + 4

a1: 1

a2: -2 (1) + 4 = -2 + 4 = 2

a3: -2 (2) + 4 = -4 + 4 = 0

a4: -2 (0) + 4 = -0 + 4 = 4

a5: -2 (4) + 4 = -8 + 4 = -4

a6: -2 (-4) + 4 = 8 + 4 = 12

a7: -2 (12) + 4 = -24 + 4 = -20

so a7 = -20

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