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ini yg aku tau = F1/F2 = q1.q2/q3.q4
F/F2 = q1.q2 = 2q1.2q2
q1 dicoret dgn q1 dan q2 dicoret dgn q2 karena pembagian..
teruss = F/F2 = 1/4 (terus dikali silang)
jadiny = F2.1= F. 4
F2 = 4F
ituu..kalo bingung tny
R1 = R
R2 = 2R
F2 =?
F2/F1 = (R1/R2)²
F2/F = (R/2R)²
F2/F = 1/4
F2 = 1/4 F
jadi besar gayanya 1/4 kali semula