Pembahasan Ujian PAI: A60 – No. 5 – Mei 2018

• \(_s{q_{xy}} = s \cdot {q_{xy}} + {g_{\left( s \right)}}\left( {{q_{\bar x\bar y}}} \right)\)
• \(0 \le s \le 1\)

\(= 1 – {\,_s}{p_x}{ \cdot _s}{p_y}\) \(= 1 – \left( {1{ – _s}{q_x}} \right)\left( {1{ – _s}{q_y}} \right)\) \(\mathop = \limits^{uniform} s\left( {{q_x} + {q_y}} \right) – {s^2}\left( {{q_x} \cdot {q_y}} \right)\) \(= s\left( {{q_{xy}} + {q_{\bar x\bar y}}} \right) – {s^2} \cdot {q_{\bar x\bar y}}\) \(= s \cdot {q_{xy}} – {q_{\bar x\bar y}}\left( {{s^2} – s} \right)\) \(= s \cdot {q_{xy}} + {q_{\bar x\bar y}}\left( {s – {s^2}} \right)\)