Preparing for Exam 2 April 10, 2002 Closed Book, Closed Notes in class (McBryde 216) 11:15am - 12:05pm ------------------------------------------------------------ There will be 6 questions, dealing with the topics of numerical integration, linear systems, and splines (2 questions each). Here's a list of things you should know or be able to do, along with the number of questions devoted to each topic. 2 questions: numerical integration - how lower and upper sums work - how trapezoidal rule works (be able to solve problems like Problem 5.2.8) - the basic idea of Adaptive Simpson's rule (you will not be required to work out a numerical solution) - different 3-point rules and upto what degree of polynomials they are exact for, e.g., - Simpson's three point rule (equation (1) on page 222) - rules with our own choice of nodes (e.g., Example 1 on page 230) - Gaussian quadrature rules (i.e., magic rules) - Gaussian two-point and three-point quadrature rules (know these by heart) - should be able to solve problems like - Problem 5.5.5 - Problem 5.5.12 - Problem 5.5.9 2 questions: linear systems - Gaussian elimination - why pivoting is important - how to do pivoting - operations count (see Box on page 264) - LU factorization - when is it possible - connection between LU and pivoting in GE - how to find inverse using LU and GE - iterative system solution - general format - Gauss-Jacobi - Gauss-Seidel - SOR - general condition for convergence of iterative methods - using spectral radius - specific conditions for convergence of iterative methods - what they are - for which method are they applicable - whether they are necessary and/or sufficient 2 question: splines - basic definition of splines - types of smoothness possible - how to impose (cook-up) extra conditions so that we can solve for unknown coefficients - solving a problem such as from Assignment #9 (and the examples we worked in class)