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Question: int - too many levels of recursion

Question:int - too many levels of recursion

vv 12915 Maple 2018
int recursion
December 13 2018
2

 

A simple (?)  int and too many levels of recursion

 

> 

J := Int(cos(2*x)/(1+2*sin(3*x)^2), x = 0 .. Pi);

Int(cos(2*x)/(1+2*sin(3*x)^2), x = 0 .. Pi)

 (1)
> 

evalf[30](J);

-0.321451052376028387436461558651e-32

 (2)
> 

value(J);

Error, (in csgn) too many levels of recursion

  
> 

 

 

The workaround I know (for J = 0) it is not very simple.
Can you find an easy one?

 

 

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