Hello I was Wondering if anyone knows of a good Multivariable Calculus book to use with PDLI have a few yet they seem more geared toward Mathematica . I'm having a problem trying to deduce the mass formula in PDL, and I wonder if thePDL frame work in TriD was made to do this easily like Energy= x*y*z or Mass = x*y*z I do make some attempts at finding this yet I find that I need to prove these formulas http://www.nanonebula.com/electron_refined.txt I found that for the acceleration the formula is$Acceleration = sum( sqrt( ($x2 - $x1 / $t2 - $t1)**2 + ($y2 - $y1 / $t2 - $t1)**2 + ($z2 -$z1 / $t2 - $t1)**2) );where $t = time I can prove this by using this logic here $Radius = ($x**2 + $y**2 +$z**2 ) $Length = sum(2*$radius);$time = sqrt($Length / $Acceleration )and if time is right then I know this formula is right
I see in the text book it says to use a triple integral over the Density*Volume Is there a special formula for finding the mass of a particle system in PDL ??? so Is sum($x + $y + $z ) the same as a triple integral for x y z ??? Best Regards, -Mark
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