Advanced Search
All Posts : Applications, Examples and Libraries

Maple's fsolve command can quickly solve expressions involving large floats where the (symbolic) solve command can take much longer attempting to solve the equivalent rational expression. For example, consider the following worksheet:

> 

restart;
> 

sys := {a + b^0.2784982189 = c+1, b + c^0.9575068354 = a+2, c + a^0.1576130817 = b+3};

{a+b^.2784982189 = c+1, b+c^.9575068354 = a+2, c+a^.1576130817 = b+3}

 (1)
> 

fsolve_start:=time[real]():
> 

fsolve(sys);

{a = 3.561242843, b = 1.994950678, c = 3.773320855}

 (2)
> 

fsolve_elapsed_seconds:= time[real]()-fsolve_start;

0.50e-1

 (3)
> 

solve_start:=time[real]():
> 

###warning, the following command may crash and/or execute indefinitely###
> 

solve(sys);
> 

solve_elapsed_hours:=(time[real]()-solve_start)/3600;


 

Download solve-fsolve-primes.mw
solve fsolve float

Please Wait...