Penjelasan dengan langkah-langkah:
a = -1/2
r = 1 : -1/2
r = -2
Un = ar^n-1
-512= -1/2 . (-2)^n-1
1024 = (-2)^n-1
(-2)^10 = (-2)^n-1
10 = n-1
n = 11
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Penjelasan dengan langkah-langkah:
a = -1/2
r = 1 : -1/2
r = -2
Un = ar^n-1
-512= -1/2 . (-2)^n-1
1024 = (-2)^n-1
(-2)^10 = (-2)^n-1
10 = n-1
n = 11