dipamilo

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11 years, 314 days

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#hi guys i have a new challenge. and i need your help again, my problem is to map a  piecewise function and #evaluate  with a matriz. thus 

A := LinearAlgebra:-RandomMatrix(2, 3);
B := piecewise(a+b < x, a.x+b^2, a+b < x and x < a^2+b, x^2.b+a.x);

A := convert(A, listlist):

#this is my last try to do that.

LL := map(((proc (a, b) ->( a+b < x, (a.x+b^2)/(a+b), a+b < x and x < a^2+b, x^2.b+a)@op), %):

#i...

please a need help

i try to organize the matrix by indice , i.e 


B := Vector[row]([1, 4, 13]);
 ind:=indices(B);

A := Matrix(3, 3, [1, 3, 4, 2, 4, 1, 2, 3, 2]);
#i try to do that

A:=B(ind,..); # and didn´t work  

#this is what i wont,

A := [1, 1], [1, 2], [1, 3], [3, 1], [3, 2], [3, 3], [2, 1], [2, 2], [2, 3]

 

help

i would like to nknow how can i eval a function wiith a matrix?


> restart; with(ArrayTools); with(LinearAlgebra); with(MTM);
 varhi := 10; 
varlo := 0; 
npar := 2; 
popsize := 9; 
par := (varhi-varlo)*RandomArray((proc (A) local i; 
if A::(rtable[column]) then 
seq(A(i), i = 1 .. NumElems(A)) else
 args; 
end if 
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