The trailing 0 repeats forever.
Henry Rich
On 6/13/2018 3:05 PM, Skip Cave wrote:
Skip said:
Given the vector a:
]a =. % 1+i.20
1 0.5 0.333333 0.25 0.2 0.166667 0.142857 0.125 0.111111 0.1 0.0909091
0.0833333 0.0769231 0.0714286 0.0666667 0.0625 0.0588235 0.0555556
0.0526316 0.05
Roger said:
Your list a are reciprocals of integers and so are all rational.
Roger also said:
All rational fractions result in infinitely repeating floating point
numbers. They are the same sets.
Skip says:
So all the numbers in a are rational, and infinitely repeating? Like 0.5,
0.25. 0.2, 0.1? I'm confused. These examples don't seem to have infinitely
repeating decimals.
​Skip
On Wed, Jun 13, 2018 at 12:44 PM Roger Hui <[email protected]>
wrote:
What's an irrational number in this context? Your list a are reciprocals
of integers and so are all rational. On the other hand, going just by the
display, 0.5 is a rational number (1%2), but since the display is to 6
significant digits, for all you know 0.5 could be
0.500000314159265358979... (0.5+ pi*1e_7) and irrational.
On Wed, Jun 13, 2018 at 10:29 AM, Skip Cave <[email protected]>
wrote:
Here's another problem similar to my previous one about finding integers
in
a floating point array:
Find the irrational numbers in a floating-point array:
Given the vector a:
]a =. % 1+i.20
1 0.5 0.333333 0.25 0.2 0.166667 0.142857 0.125 0.111111 0.1 0.0909091
0.0833333 0.0769231 0.0714286 0.0666667 0.0625 0.0588235 0.0555556
0.0526316 0.05
Create a function that will generate a boolean array indicating the
locations of the irrational numbers in a.
Skip
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