Chapter 5: Numerical Integration and Differentiation
www.ece.mcmaster.ca › ~xwu › part6Chapter 5: Numerical Integration and Differentiation PART I: Numerical Integration Newton-Cotes Integration Formulas The idea of Newton-Cotes formulas is to replace a complicated function or tabu-lated data with an approximating function that is easy to integrate. I = Z b a f(x)dx … Z b a fn(x)dx where fn(x) = a0 +a1x+a2x2 +:::+anxn. 1 The ...
NumericalDifferentiation andIntegration
www.uio.no › h08 › kompendietLet us first make it clear what numerical differentiation is. Problem 11.1 (Numerical differentiation). Let f be a given function that is only known at a number of isolated points. The problem of numerical differ-entiation is to compute an approximation to the derivative f 0 of f by suitable combinations of the known values of f.
5 Numerical Differentiation
www2.math.umd.edu › lecture-notes › differentiation-chapexample, a more accurate approximation for the first derivative that is based on the values of the function at the points f(x−h) and f(x+h) is the centered differencing formula f0(x) ≈ f(x+h)−f(x−h) 2h. (5.4) Let’s verify that this is indeed a more accurate formula than (5.1). Taylor expansions of the terms on the right-hand-side of ...