Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with precision-and-accuracy
Search options not deleted
user 72284
0
votes
0
answers
144
views
Precision[] and Accuracy[] give non-integer result
a = N[Pi, {20, 19}];
Precision[a] (*19.497149872694134`*)
Accuracy[a](*19.`*)
Accuracy[a]*Log2[10] (*63.116633802859894`*)
My question
The Precision[a] value is a non-integer, which I don't know w …
- 177
-1
votes
1
answer
215
views
About the Rationalize of an approximated number
In[3]:= Clear["*"];
approPi = N[Pi];
{Rationalize[approPi], Round[approPi, 10^-15]}
Out[2]= {3.14159, 3141592653589793/1000000000000000}
Above Rationalize failed to give a rational number probably …
- 177
2
votes
1
answer
92
views
A probable misdescription of official Doc about $MachinePrecision?
According to the official documentation:
When you enter an approximate real number, the Wolfram Language has to decide whether to treat it as a machine number or an arbitrary‐precision number. Unless …
- 177
1
vote
2
answers
159
views
Does SetPrecision[x, Infinity] expose the internal exact number in the approximated number?
What I already know (maybe) :
My theory about Mathematica's way of implementing approximated number
An number approX with arbitrary precision prec represents not a point on number axis but an interva …
- 177