Odpowiedź:
Szczegółowe wyjaśnienie:
a20 = 40
r = - 1/2
a20 = a2 + (20 - 2) * (-1/2)
40 = a2 + 18 * (-1/2)
40 = a2 - 9
49 = a2
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Odpowiedź:
Szczegółowe wyjaśnienie:
a20 = 40
r = - 1/2
a20 = a2 + (20 - 2) * (-1/2)
40 = a2 + 18 * (-1/2)
40 = a2 - 9
49 = a2