|Re: HP-50 and Triple Integrals|
Message #11 Posted by Valentin Albillo on 31 Oct 2007, 9:49 a.m.,
in response to message #3 by Chuck
Just for the record, the following HP-71B code:
10 DEF FNF(X,Y,Z)=6*X*Y
20 DEF FNG(X,Y)=INTEGRAL(0,4-2*X-Y,H,FNF(X,Y,IVAR))
30 DEF FNH(X)=INTEGRAL(0,4-2*X,H,FNG(X,IVAR))
40 H=.01 @ DISP INTEGRAL(0,2,H,FNH(IVAR))
produces the correct answer in FIX 2 in 0.76 seconds under Emu71 on an old laptop, or 3 minutes in a physical HP-71B.
The template used is general, just replace your f(x,y,z) and limits (shown in bold) in the above code to compute any other triple integral.
Best regards from V.