Re: how to solve a "symbolic" system equation

[Przemek Klosowski]

On 07/19/2015 05:48 AM, Leo07nard wrote:

I have a warning during the solution. it is :
"
warning: Using rat() heuristics for double-precision input. 
"
Do you know what is this?

Basically, when you use a number such as 1.0/3.0, it can mean two different things: either 1/3, which is an exact rational, or a floating point number which is not equal to 1/3. Symbolic manipulations prefer the rational representation because it is infinitely precise, but they can't be sure that the user wanted that, hence the warning.