Jawabanmu

2014-02-27T21:27:59+07:00
U1 = a = 2 U4 = ar^3 = 1/4 ar^3 = 1/4 2 x r^3 = 1/4 r^3 = 1/(4x2) r^3 = 1/8 r^3 = (1/2)^3 r = 1/2 Sn = a(1-r^n)/1-r S5 = 2(1-1/2^5)/1-1/2 S5 = 2(1-1/32)/(1/2) S5 = 2(31/32)/(1/2) S5 = (62/32)/(1/2) S5 = (62/32) x 2 S5 = 124/32 S5 = 3,875 U17 = ar^16 U17 = 2x(1/2)^16 U17 = 2x(1/65536) U17 = 2/65536 U17 = 1/32768