Adam Ledger

Mr. Adam Ledger

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8 years, 46 days
Perth, Australia

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I was just wondering if someone could explain why kernelopts(maxdigits) = 38654705646, as in is this different for a differing computer, or is there a design aspect of maple that requires it to be this number, or is there a mathematical reason?

I found the following inconsitencies when studying the 2nd branch of the LambertW function, and i was hoping someone can help me understand what i am doing wrong here:



#Forming an equation based on what the simplify command produces as output with the lhs on the rhs:

exp(-(1/2)*LambertW(1, 2*exp(2))+1) = simplify(exp(-(1/2)*LambertW(1, 2*exp(2))+1));

#A float approximation made directly for the first branch of LambertW directly:
exp(-(1/2)*LambertW(1, 2*exp(2))+1)=evalf[10](convert(evalf[10](LambertW(1, 2*exp(2))), 'rational'));
# A float approximation made for the value implied by equation stated in the first line gives a slightly differing value:
evalf[10](rhs(isolate((1/2)*sqrt(2)/sqrt(1/x) = convert(evalf[10](exp(-(1/2)*LambertW(1, 2*exp(2))+1)), 'rational'), x)));
#The symbolic simplify command gives the following output, which is contradictory to the evalf command's output for that argument:
exp(-(1/2)*LambertW(1, 2*exp(2))+1)=simplify(exp(-(1/2)*LambertW(1, 2*exp(2))+1),'symbolic');
#So i investigated this a little further in observing that this seemed like a few of the functions i have found very interesting, have a Number theoretic proportionality to the number of significant digits we have restricted the evalf command to:
F:=Re(exp(-(1/2)*LambertW(1, 2*exp(2))+1))+Re((1/2)*sqrt(2)/sqrt(1/LambertW(1, 2*exp(2)))):
fLOATY:=proc (k) options operator, arrow; evalf[k](F) end proc;
DATA := [seq([k, convert(fLOATY(k)*10^(k-1), 'rational')], k = 1 .. 40)];
plots[:-pointplot](DATA, color = "Black");

A parameterization of the function i am studying this morning produced what seems to be not single valued on the domain i choose,


plot(floor((x+1)^2/x^2)-(x+1)^2, x = -10 .. 10, coords = logarithmic);

plot(floor((x+1)^2/x^2)-(x+1)^2, x = -10 .. 10, coords = logcosh);


but the cartesian is fine:

Do implicit plots need to be strictly real valued because of the multivalued problem with complex functions? because i get this really funny output for this one, and if I increase Digits, it produces a blank axis for some reason.

How do I alter the font style of specific characters in say a plot title in the one below, i want "gcd" to be non itallics, but i want the rest to remain itallics. I need to be able to do this with command line code, because it will be for an animation made frame by frame from still images made in maple.


Maple Worksheet - Error

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