Description
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.
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