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(2*(0.5!))^2 calculator result is wrong. It is Pi (3.141592654) and not 3.081939599442381. Is this a bug???

off-topic
 Jan 17, 2019
 #1
avatar+533 
0

0.5! isnt defined ..

 Jan 17, 2019
 #2
avatar+102355 
+1

I agree.....the result should =  pi

 

I do not know......maybe alan does

 

 

cool cool cool

 Jan 17, 2019
 #3
avatar+28125 
+2

The calculator here doesn't seem to like non-integer factorials.  It gets 0.5! wrong.  

 

Webcalc:   0.5! = 0.8777726925922196...

 

In fact:  0.5! = 0.88622692545275801365...

 

(Non-integer factorials are defined using the Gamma function:   \(n! = \Gamma(n+1)\)  ).

Alan  Jan 18, 2019

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