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Question: Expecting numerical value from Integrate but getting symbols

Question:Expecting numerical value from Integrate but getting symbols

shashi598 50 Maple
integration distribution numeric statistics deprecated
June 29 2022
2

pdf.mw
 

> 

with(stats)
> 

"f(x):=statevalf[pdf,normald[0,2*4.47]] "

proc (x) options operator, arrow, function_assign; statevalf[pdf, normald[0, 2*4.47]] end proc

 (1)
> 

plot(f(x), -20 .. 20)

 
> 

int(x*f(x), x)

.5000000000*x^2*statevalf[pdf, normald[0, 8.94]]

 (2)
> 

NULL


 

Download pdf.mw

Want to integrate x*f(x) where x is from -20..20, I am expecting a pure float number but getting symbols like statevalf_pdf in answer.

 
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