### Numerical Mathematics

#### Course Description

Sources of errors in numerical computations. Direct methods for solving systems of linear equations. Polynomial interpolation. Interpolation by splines. Numerical integration and differentiation. Linear least square problems. The QR factorization and SVD in solving least squares problem. Root finding for nonlinear equations. Fundamentals of unconstrained optimization.

#### Learning Outcomes

- distinguish and identify types of errors in numerical computing
- apply direct methods in solving systems of linear equations
- identify ill conditioned system of linear equations
- compute interpolation polynomial and cubic spline for given data and estimate the error of the approximation
- compute approximation value of a definite integral and estimate error of the approximation
- describe and apply important methods in solving problems of linear least squares
- apply derived numerical methods for solving nonlinear equations
- use fundamental methods of unconstrained optimization
- use choosen numerical software for solving problems using numerical methods
- analyze accuracy of obtained results and visualization of numerical solutions

#### Forms of Teaching

**Lectures**Lectures are held in two cycles, 3 hours per week

**Exercises**Exercises are held in two cycles, 1 hour per week

**Partial e-learning**Students will solve online quizzes. Students can access online course materials in Moodle

**Laboratory**During the semester students will work on program tasks

#### Grading Method

Continuous Assessment | Exam | |||||
---|---|---|---|---|---|---|

Type | Threshold | Percent of Grade | Threshold | Percent of Grade | ||

Laboratory Exercises | 0 % | 15 % | 0 % | 15 % | ||

Quizzes | 0 % | 20 % | 0 % | 0 % | ||

Class participation | 0 % | 10 % | 0 % | 0 % | ||

Seminar/Project | 0 % | 10 % | 0 % | 0 % | ||

Mid Term Exam: Written | 0 % | 35 % | 0 % | |||

Final Exam: Written | 0 % | 30 % | ||||

Exam: Written | 0 % | 85 % |

##### Comment:

Students can earn an additional 10% of points if actively participate in classes or through a seminar / project.

#### Week by Week Schedule

- Sources of Error in Computational Models. Floating point precision and error propagation. Finite differences.
- The Gaussian Elimination Method (GEM). LU Factorization. Applications. Pivoting Strategies.
- PLU Factorization of the matrix. Symmetric and Positive Definite Matrices. The Cholesky Factorization.
- Stability Analysis for Linear Systems. Matrix Norms. The Condition Number of the Matrix. Improving the Accuracy of GEM. Scaling. Iterative refinement.
- Lagrange Form of the Interpolation Polynomial. The Interpolation Error. Divided Differences. Newton Form of the Interpolation Polynomial.
- Approximation by splines. Linear and cubic spline. Introduction to numerical integration.
- Midpoint, Trapezoidal and Simpson rule. Composite Newton-Cotes Formulae. Richardson Extrapolation. Romberg integration. Applications.
- Midterm exam
- Linear least squares. Polynomial approximation. Overdetermined linear systems. Normal equations. Sensitivity and conditioning.
- Matrix Factorization that Solve the Linear Least Square Problem. QR and SVD Decomposition. Applications of the SVD and QR decomposition in solving linear least squares problem
- Root finding of Nonlinear Equation . The Bisection Method. Fixed-Point Iterations Method.
- Newton’s Method. Secant method. Numerical solving of nonlinear system. Applications
- Fundamentals of unconstrained optimization. Direct Search Algorithms. Gradient Methods (the steepest descent). Line Search Techniques. Trust-Region Methods. Conjugate Gradient Method.
- Quasi-Newton Methods. Large-scale unconstrained optimization. Nonlinear Least-Squares Problems. The Gauss-Newton Method. The Levenberg-Marquardt Method.
- Final exam

#### Study Programmes

##### University undergraduate

[FER3-EN] Computing - study

Elective Courses
(5. semester)
[FER3-EN] Electrical Engineering and Information Technology - study

Elective Courses
(5. semester)
#### Literature

Milišić, Josipa Pina; Žgaljić Keko, Ana, (2013.),

*Uvod u numeričku matematiku za inženjere*, Element
Z. Drmač, V. Hari, M. Marušić, M. Rogina, S. Singer, S. Singer (2003.),

*Numerička analiza*, PMF-MO
Alfio Quarteroni, Riccardo Sacco, Fausto Saleri (2017.),

*Numerical Mathematics*, Springer
Michael T. Heath (2018.),

*Scientific Computing*, SIAM
Jaan Kiusalaas (2013.),

*Numerical Methods in Engineering with Python 3*, Cambridge University Press
J. E. Dennis, Jr., Robert B. Schnabel (1996.),

*Numerical Methods for Unconstrained Optimization and Nonlinear Equations*, SIAM
Gilbert Strang (2019.),

*Linear Algebra and Learning from Data*, Wellesley-Cambridge Press
Jorge Nocedal, Stephen Wright (2006.),

*Numerical Optimization*, Springer Science & Business Media#### Lecturers

#### For students

#### General

**ID**223364

Winter semester

**5**ECTS

**L1**English Level

**L2**e-Learning

**45**Lectures

**0**Seminar

**15**Exercises

**10**Laboratory exercises

**0**Project laboratory

#### Grading System

**85**Excellent

**70**Very Good

**55**Good

**45**Acceptable