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Dari hasil survei terhadap berbagai bank, terindikasi bahwa jumlah antrian di bank (dinotasikan \\(Q\\)) dianggap berubah secara kontinu terhadap waktu (dinotasikan \\(t\\), setelah jam buka). Berikut adalah tabel jumlah antrian (dalam puluh orang) terhadap waktu (dalam jam) di sebuah bank.

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\\(t\\) (jam)\\(2\\)\\(4\\)\\(5\\)\\(6\\)
\\(Q\\) (puluh orang)\\(10\\)\\(50\\)\\(40\\)\\(70\\)
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Polinom interpolasi Lagrange orde \\(3\\) dari data tersebut dapat dituliskan menjadi \\(Q(t)=At^3+Bt^2+Ct+D\\). Nilai \\(A\\), \\(B\\), \\(C\\), dan \\(D\\) berturut-turut adalah $\\ldots$.

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Gunakan polinom interpolasi yang diperoleh untuk mendapatkan interpolasi jumlah antrian setelah \\(3\\) jam dari jam buka.

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