Axel Vogt

5821 Reputation

20 Badges

20 years, 229 days
Munich, Bavaria, Germany

MaplePrimes Activity


These are replies submitted by Axel Vogt

I would be interested on a short "report".

Especially if one can directly call Maple's help

@John Fredsted Yes. But just install the 32 bit version (and you can do have both, AFAIK).

PS: I have done that because of the interface (and some own 32 bit DLLs)

I could not reproduce your problem(s). But why not using classical mode?

And if you save as brute Maple code only ( *.mpl ) you might be independend.

I do it as follows (in classical mode): after typing the command
additonally I insert an empty line by <shift>+<enter>, like in any
word processor. Then execute.

Guess it works in the standard as well (may be that was already said).

The help should be more clear about that topic (even if it says "approximate"
and that Numerics is used).

The switch is at Digits = 11, because 2^32-1 has 11 places. If one thinks of
it in terms of computing over integers. Which is not clear at all.

The help says: These functions compute integer approximations to logarithms
of x. They are  based on the IEEE function logb.

b is real and If x is real, ilog[b](x) returns r such that

                   r                   (r + 1)
                  b  <= |x| and |x| < b

But does it mean r as integer or as float (like logb)?

Now Digits:=10 as default and using

b:=3;
x:=3^22-1;
r:=ilog[3](x);

b^r <= x; is(%);
                      31381059609 <= 31381059608
                                false

Which is not as stated in the help. But it holds for floats:


evalf(b)^r <= x; is(%);;
                                  11
                   0.3138105961 10   <= 31381059608
                                 true

I think one would need Digits = ilog10(evalf(x)) + 2

pls do not use such huge avatars - yours is ~ 2 MB

Carl Love & Joe Riel: Thank you, I see ... (yes, I used showstat)

 

PS/off: I neither see my answer nor your replies, just through RSS
in parts, http://www.mapleprimes.com/comments/feed

That new board software is a shame. And it still does not work with FF ...

Strange, that this is not using "option remember"

MP_some_cosfourie.mws

You F depends on w and x.

And you use x again for the transform. At least write fouriercos(F(w),w,t)

Even then I do not see why it is strange. It is complicated, yes.
One can make it a bit more simple.

 

I have mine in the lib directory, C:\programs_x86\Maple17\lib\maple.ini

Me too. 
And then I clean it up by replacing "^p >" by "^p"
Which means: at each paragraph followed by "> " the latter is deleted.
In words: after each (hard) line break that prompt vanishes.

With Digits =15 the follwoing might do the job

g:= x -> piecewise( x < 6, Sum(sin(x/(k+1))/k, k = 1 .. infinity), 
    Sum(sin(x/(k+1))/k, k = 1 .. floor(x)) + Sum(sin(x/(k+1))/k, k = 1+floor(x) .. infinity));
   
plot(g, 0 .. 50);

Though in http://www.mapleprimes.com/posts/200020-Site-Seems-To-Work-Now-With-FF I thought it is OK it turns out that just ~ 1/2 dozend threads are working properly (including this)

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