4. Use Lagrange interpolating polynomial to compute the value of f(1.3) for data points (0,-1), (1, 1), (2,9), (3, 29). Ans. 2.497 5. Obtain interpolating polynomial for the following table, and hence compute the value of f(2.5) with the help of Lagrange formula. 1 X 3 4 Ans. x³, 15.625 f(x) 1 27 64 28

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