12.07.2015 Views

Numerical Mathematics - A Collection of Solved Problems

Numerical Mathematics - A Collection of Solved Problems

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332 NUMERIČKO DIFERENCIRANJE I NUMERIČKA INEGRACIJAPrimenom dobijene formule približno izračunati integral I = ∫ π/20cos t dt iproceniti grešku.Rešenje. Zadatak se rešava slično prethodnom. Ovde dobijamoA 1 = 2 3 , A 2 = 1 3 , A 3 = 1 6 ,R(f) = −f ′′′ (ξ)72 , ξ ∈ (0,1),I = π 3 , |R(cost)| ≤ π 2π 3576 < 8.46 × 10−2 .

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