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dipamilo

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how did it works "minimize"...

dipamilo 15
December 31 2013
0 0

I have the following function with multiple extremes and I intend to find the global minimum within the following constrains

f:=x*sin(4*x)+1.1*sin(2*y)

x=0...10

y=-10..10

My MAPLE version 15 lets you use two possibilities
1. The optimization package MAPLE using the Minimize command, and opt for some of the available methods such as the method quasinewton . however, from what I gather , this optimization package allows to find local minimum

2 . use the minimize command, which returns the global minimum for that function , but it is not known completely what method used to achieve the value found .how did it works?

According to the response of Markiyan Hirnyk , it seemed that the procedure minimizes the associated command is to find all values ​​within the range ( bounds ) and replace them in the target function then compares the values ​​to obtain the least of them . this behavior is very similar to what occurs for example in the finite element method . I admit being wrong in my conclusion from this that I ask for your help

função_teste_2.mw

 

numerical method ??...

dipamilo 15
December 31 2013
0 0

firstly thank you,
in fact this is a "stuff maple", and it is not clear which method is used. Perhaps I can say that the  command minimize work as a kind of numerical method because it seems to be what happens.

grateful...

dipamilo 15
October 06 2013
0 0

this is what i really want

thank you

grateful...

dipamilo 15
October 06 2013

this is what i really want

thank you

piecewise abs Maximize...

dipamilo 15
October 05 2013

hi maplefriends, i´m trying to solve a piecewise funtion, and gold is find the maximum and  location, for that i use de package Maximize.unfortunately the result i have is the local maximum, can anyone show me, how can i do that?        

maximize_abs.mw    

great!...

dipamilo 15
February 20 2013
0 0

 thanks a lot , exactly what i need

great!...

dipamilo 15
February 20 2013

 thanks a lot , exactly what i need

exactly . this is the point....

dipamilo 15
January 16 2013
0 0

perfect andri, is a good ideia to continue...

regards

exactly . this is the point....

dipamilo 15
January 16 2013

perfect andri, is a good ideia to continue...

regards

the result must be indicie...

dipamilo 15
January 16 2013
0 0

tanks andri,
but the result must be indicies not the values.

for example, looking for the document u made. the result i expected is

c:=8,6,8,8 # the minor indicies in the matrix a

do you think is possible i guet it doing

for ic from 1 to 4 do

P[ic]:=a[c(ic),ic]

end do

maybe it look for the indicies in matrix a????

the result must be indicie...

dipamilo 15
January 16 2013

tanks andri,
but the result must be indicies not the values.

for example, looking for the document u made. the result i expected is

c:=8,6,8,8 # the minor indicies in the matrix a

do you think is possible i guet it doing

for ic from 1 to 4 do

P[ic]:=a[c(ic),ic]

end do

maybe it look for the indicies in matrix a????

Random Matrix whit restriction...

dipamilo 15
October 22 2012
0 0

thaks a lot ! is a good idea!!!

Random Matrix whit restriction...

dipamilo 15
October 22 2012

thaks a lot ! is a good idea!!!

this is a good  enough !! tanks a l...

dipamilo 15
August 08 2012
0 0

this is a good  enough !! tanks a lot 

this is a good  enough !! tanks a l...

dipamilo 15
August 08 2012

this is a good  enough !! tanks a lot 

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