Pembahasan Soal Ujian Profesi Aktuaris
SOAL
Nyatakan \({d^{\left( 4 \right)}}\) sebagai fungsi \({i^{\left( 3 \right)}}\)
- \(4\left[ {1 – {{\left( {1 + \frac{{{i^{(3)}}}}{3}} \right)}^{ – \frac{3}{4}}}} \right]\)
- \(3\left[ {1 – {{\left( {1 + \frac{{{i^{(4)}}}}{4}} \right)}^{ – \frac{3}{4}}}} \right]\)
- \(4\left[ {1 + {{\left( {1 + \frac{{{i^{(3)}}}}{3}} \right)}^{\frac{3}{4}}}} \right]\)
- \(3\left[ {1 + {{\left( {1 + \frac{{{i^{(4)}}}}{4}} \right)}^{ – \frac{3}{4}}}} \right]\)
- \(3\left[ {1 – {{\left( {1 + \frac{{{i^{(3)}}}}{4}} \right)}^{ – \frac{3}{4}}}} \right]\)
Diketahui | \({d^{\left( 4 \right)}}\) |
Rumus yang digunakan | \({\left( {1 + \frac{{{i^{(3)}}}}{3}} \right)^3} = {\left( {1 – \frac{{{d^{(4)}}}}{4}} \right)^{ – 4}}\) |
Proses pengerjaan | \({\left( {1 + \frac{{{i^{(3)}}}}{3}} \right)^3} = {\left( {1 – \frac{{{d^{(4)}}}}{4}} \right)^{ – 4}}\) \({\left( {1 + \frac{{{i^{(3)}}}}{3}} \right)^{ – \frac{3}{4}}} = 1 – \frac{{{d^{(4)}}}}{4}\) \({d^{(4)}} = 4\left[ {1 – {{\left( {1 + \frac{{{i^{(3)}}}}{3}} \right)}^{ – \frac{3}{4}}}} \right]\) |
Jawaban | a. \(4\left[ {1 – {{\left( {1 + \frac{{{i^{(3)}}}}{3}} \right)}^{ – \frac{3}{4}}}} \right]\) |