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Diket
U1 = 0,5 = ½
U6 = 16
Ditanya = S6..?
Jawab
U6 = a . r^5 = 16
U1 = a = ½
------------------- ÷
r^5 = 32
r = ^5√32
r = 2
Sn = a(r^n - 1) / r - 1
S6 = ½(2^6 - 1) / 2 - 1
S6 = ½(64 - 1)
S6 = ½(63)
S6 = 31,5 m (C)
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semoga membantu ya...
Diket
U1 = 0,5 = ½
U6 = 16
Ditanya = S6..?
Jawab
U6 = a . r^5 = 16
U1 = a = ½
------------------- ÷
r^5 = 32
r = ^5√32
r = 2
Sn = a(r^n - 1) / r - 1
S6 = ½(2^6 - 1) / 2 - 1
S6 = ½(64 - 1)
S6 = ½(63)
S6 = 31,5 m (C)
semoga membantu