Express A³f, as a backward difference.
In Computer Oriented Numerical Techniques, the operator A denotes the shift operator, and the backward difference operator is represented by ∇. The relationship between the shift operator (A) and the backward difference _________ _________ _________ __________ ___ ______ _____.
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Regula-falsi method (ii) Newton Raphson method (iii) Bisection method (iv) Secant method
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By decinnial census, the population of a town was given below
Year (x) : 1971 1981 1991 2001 2011
Population (y): 112 132 158 189 226 (in thousands)
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Express A³f, as a backward difference.