Hi everybody.

In the help pages, I read that :

"This PLU decomposition generates a square unit lower triangular L factor and an upper triangular factor U with the same dimensions as A so that
                                A = P . L . U
.  The Matrix P is a permutation Matrix."

While looking into that subject, Maple offer me this:

Some years ago I have read about the method of Determinant Decision Diagrams. With this method one can analyze relatively large electrical circuits symbolically (for example opamp uA741 as a benchmark) . The authors wrote they had implemented the algorithm in Maple. I wonder if anybody read about this or tried to implement this algorithm. It would be nice to have this capability in Maple.

Here is a link:

http://portal.acm.org/citation.cfm?id=266510

 

I'm trying to find a function f(n) that will give the rightsum approximation of x^6 on the interval 0..4 using n rectangles and so far im coming up with nada.

So far this is what I have.

f:=n->rightsum(n^6, n=0..4,n);

but then later I'm trying to use this in a limit to find the area under the curve as n goes to infinity and I keep gettin infinity back which it absolutely is not. Would love to get some help on this as I have been droning on it for to long.

my question is:

the number of circles that can be drawn out of 10 points of which 7 are collinear is:

ifanybody knows the solution.pls send me.

answer of this question is 85

I looked at the Maple help menu and got acquainted with the op command to extract the elements of a list. How can I extract particular elements of a list. For example....

 

a:=[2, sqrt(7), "john", sin(57)]

how can I extract elements 2, john and sin(57) ? I tried op( [1,3,4] ,a) but I get an error message.

Thanks in advance!

 

 

<p>Hey Folks,</p>
<p>I've got a pretty simple question here. I use maple to check my work and I'm wondering how  to get a numerical approximate of a Riemann sum containing a trig function. I don't want sin in the answer. For example:</p>
<p><maple>(1/40)*Pi*(Sum((1/40)*sin*i*Pi, i = 1 .. 10))</maple></p>
<p>A<maple>pproximates to 0.33928 sin.</maple></p>
<p><maple></maple><maple>Any help would be greatly appreciated. Cheers.</maple></p>
<p><maple></maple></p>

Sometimes I realize that I need a approximate result rather than an exact answer after I enter Maple command. Is there a way to apply the evalf command at the very end of an input? Thanks in advance!!

I am using Maple 12 on Windows XP.  When I export a plot to postscript as follows

plotsetup(ps,`filename.eps`,plotoptions=`width=2in,height=3in`);
plot(...);

the width and height options seem to have no effect.   The graphic is always 19.579 cm by 19.579 cm.  Other options such as portrait and noborders do have an effect.  Any suggestions for why this is not working?

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CAN YOU GUYS ANSWER THIS QUESTION AND SHOW THE STEPS THE QUESTIONS ARE

5x - 4 = 5 over 3 minus 7x over 5                                                            THE ANSWER IS x =85 over 96

 

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