Axel Vogt

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19 Badges

16 years, 341 days
Munich, Germany

MaplePrimes Activity


These are Posts that have been published by Axel Vogt

I just posted and then clicked 'logout' (upper right on the page).

After going back I recognize I am still logged in. Strange. Does
the page not clear the data (= cookies?) for that demand?

J:=Int((3*v^2+4*v+2)*(-(3*v^2+2*v+1)/(3*v^2+8*v+4))^(1/2)/(1+2*v)^2,
      v = -2 .. -2/3)

Then J = -8/3*EllipticK(1/3) + 8/3*EllipticPi(-1/3,1/3) + 3*EllipticE(1/3)


That integral caught my attention through a private discussion. Both MMA and Maple
only succeded up to a limit in the lower boundary, which could not be determined.

Re-writing the integrand as A/(polynomial of degree 4) using the command 'rationalize'

All that looks like what many may have expected to be provided by Maple.

But personally I do not need advertising towards that every second day.
Not really.

Saying 'logout' through the menu bar does not log me out.

I am still logged in (even after leaving the pages).

And I guess, that the according cookie is not properly cleared.
But it should.

restart; interface(version); # Maple 15
Digits:=40;
# symbolic expression
t:=1/292/(-77796+62196*I*3^(1/2))^(1/3)*73^(1/2)*
  ((-77796+62196*I*3^(1/2))^(1/3)*
  (-3*(-77796+62196*I*3^(1/2))^(2/3)-
  7812+688*(-77796+62196*I*3^(1/2))^(1/3)+
  3*I*3^(1/2)*(-77796+62196*I*3^(1/2))^(2/3)-7812*I*3^(1/2)))^(1/2)
  -0.3; # <--- does that give the trouble ?
simplify(t); # makes it a float ...

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