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This is closely related to: https://math.stackexchange.com/q/2361727/10063 and is a new version of Can Mathematica propose an exact value based on an approximate one?.

In Wolfram|Alpha I can input an approximate number, say 1.46342 and get a closed form expression that approximates it,

$\qquad 1.46342 \approx \sqrt{\pi - 1}$

Is there a way to do this in Mathematica? According to Can Mathematica propose an exact value based on an approximate one? (which is an older thread), there seems to be no canonical way. However, the functions FindFormula and FindSequenceFunction seem to be very related to this. I wonder if there is a way to "hack" them into accomplishing this.

a06e
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  • See 9362 – Bob Hanlon Jul 17 '17 at 17:05
  • @CarlWoll So it looks like there is no standard way of doing it inside Mathematica. Hmm, since that thread is a bit old (dating 2012) I'll reformulate my question, to address specifically a way to hack FindFormula and FindSequenceFunction to do this. I just have a feeling this is possible. I think that makes this question different, agree? – a06e Jul 17 '17 at 17:33
  • What's wrong with the answer given in the duplicate question: WolframAlpha[ToString[num], IncludePods -> "PossibleClosedForm"]? – yohbs Jul 17 '17 at 19:55
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    @yohbs It uses WolframAlpha. Try to look at tit this way: Can you do it with Mathematica offline? – a06e Jul 17 '17 at 21:42

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