Lab 17: Tuesday May 27, 2014

Announcements

• Due tonight: Homework 4, lecture quizzes, lab quiz.
• Office hours today:

• In Odegaard after class, and then in Lewis 328 until 5pm,
• Online 5-6pm, look for announcement on Canvas, but may use GoToMeeting

• Final project: Part 1 will be posted soon, discussed on Thursday.

  Due Wednesday, June 11. (But don’t wait to the last minute!)

Today’s lab

• Go through the notebook $UWHPSC/labs/lab17/Tridiagonal.ipynb, also visible at http://nbviewer.ipython.org/url/faculty.washington.edu/rjl/notebooks/Tridiagonal.ipynb.

• Work in pairs on writing a Fortran program to solve the same tridiagonal linear system considered in the notebook with:

  A =
    [[   1.  200.    0.    0.    0.]
     [  10.    2.  300.    0.    0.]
     [   0.   20.    3.  400.    0.]
     [   0.    0.   30.    4.  500.]
     [   0.    0.    0.   40.    5.]]
  
  b =
    [ 201.  312.  423.  534.   45.]
  

• Use the LAPACK surbroutine dgtsv. See the documentation at http://www.netlib.no/netlib/lapack/double/dgtsv.f.

• There is quiz for Lab 17