Math Forum / Mathematics / Recreational Math / March 2008

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Can Maple 11 calculate the TABLE integrals?
Enjoy yet another VM machine discovery.
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What if:  $430,000 home is financed at 6.2% over 30 years.  I can find
out what the payments would be if the interest rate was 1% instead of
6.2%, ($1383 vs $2633), but what I can't find out is how many months
it would take to pay off the loan assuming I kept making the same

Hello computer algebra Warrior the Earthling,
Alarm! Train hard, fight easy!
Our old good carbon life in a danger!
The Final Battlefield is already in sight!

It was just a curiosity, someone suggested
the abacus is "back to front" on this postage stamp.
Can this be confirmed?
If so, how is it so?

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Claim your solution and collect $1000 in 10 days.
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Identification defects in Mathematica provides a rich source

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If the same bugs exists through numerous software releases,
I think that is valuable public information.
It just should not happen.

NSum[(Cos[n]/n)^1, {n, 1, Infinity}]     slow convergence
NSum[(Cos[n]/n)^2, {n, 1, Infinity}]     fast convergence
0.0420195                      RIGHT
0.572578                       WRONG

The term "computer algebra system" is totally misleading.
What we have now is as much genuine computer algebra systems
as a glob of warm clay is Adam.
It requires to ensoul what we have with the breath of life.

A circle has a radius of 42.13 feet and is equally divided around the
circumference into 34 pieces.
What is the chord length?

Consider ' all '  possible and distinct (and closed) curves C in a
plane which are boundaries of star domains (# ) and all of which have
the same given length L.  Let S equal the area of a circle with
circumference L.   If one were to randomly (## ) choose a very large

Would you like to see JSH go completely ballistic?
The only way to achieve that is to abstain from replying to him.
When you reply to him it is like throwing gasoline on to a fire.
You will not out-wit him. You will not get him to admit he is wrong.

A closed curve C (such as an ellipse, for example) is in a plane P.
C is such that there exists at least one point in P from which one can
draw radii to every point on C without crossing C.  Does this type of
C have a (known)special name?

can you detect a pattern in the decimals sequence of this :
(for n=infinite)  Sn=1/((10^n)-1)  ?
If you find it difficult subtract 0.022222... from the previous sum.
Salvatore

Here is the question. This concerns a claim of plagarism. There are
two indexes of a similar text numbering about 750,000 words. The first
index has 27,740 terms in it, while the second index has 3,500 terms
in it. The authors of the first index claim that the authors of the

I would like to generate a 3D function of three variables based on
experimental data f(x,y,z). For example, let assume that one measured the
room temperature at 100 different location in the room.
So, now we have 100x4 array thus, at each line we have x y z and T. My goal