problem with CHS

[Didier Lachieze]

(03-01-2019 06:56 PM)Albert Chan Wrote:  On XCas, rand(n, 1, 10) does not really meant n random numbers, ranged 1 to 10

I think it meant n random samples from list 1 to 10, thus all elements are unique.

RANDINT(a,b,c) which is a home function, returns a list of size a with each element being a random integer x from b to c. The elements are not unique.

(03-01-2019 06:56 PM)Albert Chan Wrote:  [sx, sy] := makemat(x -> rand(2)*2 - 1, 2, n);

With the same logic and using RANDINT :

Code:

sx:=RANDINT(n,0,1)*2-1;
sy:=RANDINT(n,0,1)*2-1;

Anyway, getting {--1} as you had initially looks suspicious to me.