"Mike" <mas_it_2000@yahoo.com> wrote in message
news:1140795153.938885.282270@e56g2000cwe.googlegroups.com...
> Hi everyone,
>
> Say I am using a linear term such as " b * X "; where "b" is a
> parameter while "X" is a variable...
>
>
> Now, assume that "b" is RAND() value and assume I am using an excel
> optimizer. When I run the optimizer, it complains that the problem
> doesn't satisfy linearity conditions; because RAND() is a function so
> it turns "b * X" to become non-linear!!!
>
>

You do not understnad what linear means. If b is indeed a parameter - fixed
value - then you are OK. If b is a random number then it is not a fixed
value and the equation is no longer linear.


--
Peter Aitken

Remove the crap from my email address before using.