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Home > Numerical methods calculators > Numerical Interpolation using Forward, Backward, Divided Difference, Lagrange's method calculator
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Numerical interpolation using Newton's Forward Difference formula
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Numerical interpolation using Newton's Forward Difference formula calculator
1. The population of a town in decimal census was as given below. Estimate population for the year 1895.
Year18911901191119211931
Population
(in Thousand)		46668193101

2. Use the following table
X0.100.150.200.250.30
tan(X)0.10030.15110.20270.25530.3073
Find (1) tan 0.12    (2) tan 0.26


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