György Bicsák, Dávid Sziroczák, Aaron Latty

Numerical methods


Trapezoidal Rule

As it was seen in the previous subchapter, depending on the changes of the function, the rectangular rules can over- or underestimate the integral value. So, it seems reasonable to get the average of the left-hand and right-hand side rules, which is actually nothing else but a four-point defined trapezoid. This way, between function values fa and f(b) a linear line is defined: which is actually a first degree polynomial. Hence the trapezoidal is a first order or linear rule, compared to the zero order or constant rectangular integration rule. The area under the line can be calculated in a simple manner. The average of the left-hand and right-hand is rules is:

Numerical methods

Tartalomjegyzék


Kiadó: Akadémiai Kiadó

Online megjelenés éve: 2019

ISBN: 978 963 454 283 4

This book on Numerical Methods is part of the Transportation and Vehicle Engineering Faculty’s curriculum at the Budapest University of Technology and Economics, created under the Stipendium Hungaricum Scholarship Programme. The book demonstrates the aim of developing and using numerical methods. Instead of relying on more complicated and expensive analytical solution methods, simpler arithmetical equations are used to approximate the accurate solution with the required level of accuracy. After discussing the various sources and propagation of solution errors, the book discusses the solution of single variable equations and system of equations. Following chapters describe the two main curve fitting methods; approximation and interpolation. These chapters are followed by the numerical differentiation and integration methods, then finally the numerical solutions for ordinary and partial differentiation equations are outlined. MATLAB is one of the most popular choice today for numerical computing, with its user friendly, yet powerful computing capability. It is practically an industry standard for prototyping and new developments, and there is great value for students to be introduced to solving problems with MATLAB. Many chapters in the notes show examples implemented in MATLAB, with actual working code available to use and practice.

Hivatkozás: https://mersz.hu/bicsak-numerical-methods//

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