1 - 1/2 + 1/4 - 1/8 + 1/16 - ... memiliki jumlah berapa yaa???

Deret tak hingga
a = 1
r = U2/U1 = (-1/2) / 1 = - 1/2

Dit . S
Rumus :
S = a / (1 - r)
S = 1 / ( 1 - (-1/2))
S = 1 / ( 1 + 1/2)
S = 1 / (3/2)
S = 1 × 2/3
S = 2/3