Hello all,

very quick questions here. Can anyone describe to me more about how using FindRoot in Mathematica on system of equations? I could not find a lot via google. Do I need to specific initial guesses? How do I do this? Thanks for the help,

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- May 1st 2011, 03:09 PMsalohcinMathematica FindRoot
Hello all,

very quick questions here. Can anyone describe to me more about how using FindRoot in Mathematica on system of equations? I could not find a lot via google. Do I need to specific initial guesses? How do I do this? Thanks for the help, - May 2nd 2011, 02:21 AMAckbeet
$\displaystyle \text{FindRoot}[\{\text{eqn}_{1},\text{eqn}_{2},\dots,\text{eqn}_{ n}\},\{x,x_{0}\},\{y,y_{0}\},\dots]$ searches for a numerical solution to the simultaneous equations $\displaystyle \text{eqn}_{i}.$ - Mathematica Help. Example:

$\displaystyle \text{FindRoot}[\{x+y==4,x-y==6\},\{x,3\},\{y,2\}]$ yields

$\displaystyle \{x\to 5., y\to -1.\}.$

Make sense?