Numerical Computing :: Project One

Execute the following lines in a Python interpreter.

    • x = 9.4

    • y = x - 9

    • z = y - 0.4

    • print(z)

What did you get for z? What should it be in exact arithmetic? Why is it not what it should be?

See Sauer’s Numerical Analysis Chapter 0.3.3 for a complete description of the rounding phenomenon.






































1