Axel Vogt

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16 years, 210 days
Munich, Germany

MaplePrimes Activity


These are replies submitted by Axel Vogt

If your work should be done in Maple then you can force it to use the NAG library for fast and _reliable_ external integration like evalf(Int(f, x=a..b, method = _d01ajc)), see the help on evalf/int. Does that already help? I have not checked your integral (as something on the params should be known), but it simplifies by changing variables to Int(1/(xi*(xi^alpha*(1+sigma*xi^lambda)^a+b*xi)^(1/2)),xi=1..x) using 1+zz=xi and then x=1+z,1-beta=alpha,P=a,B=b But I have not looked up tables whether more is known, that algebraic fct looks quite general ...
If your work should be done in Maple then you can force it to use the NAG library for fast and _reliable_ external integration like evalf(Int(f, x=a..b, method = _d01ajc)), see the help on evalf/int. Does that already help? I have not checked your integral (as something on the params should be known), but it simplifies by changing variables to Int(1/(xi*(xi^alpha*(1+sigma*xi^lambda)^a+b*xi)^(1/2)),xi=1..x) using 1+zz=xi and then x=1+z,1-beta=alpha,P=a,B=b But I have not looked up tables whether more is known, that algebraic fct looks quite general ...
Thx - the new work around works for me!
Thx, for me (Win ME, Maple10) those suggestions do not work. The directory is users (with an additional S) and the ini file there does not have those lines. If i add them then nothing happens. May be due to my somewhat old operating system?
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