[SciPy-Dev] PR #195: optimize.root - interface to root finding algorithms

[Denis Laxalde]

Hi,

In pull request #195, I am proposing the addition of a unified
interface `optimize.root` for root finding algorithms for multivariate
functions, similar to `optimize.minimize` and
`optimize.minimize_scalar` (already merged).
Available solvers are:
 - hybr: MINPACK's hybrid Powell algorithm (fsolve)
 - lm: MINPACK's Levenberg-Marquardt algorithm (leastsq)
 - and solvers from optimize.nonlin (broyden1, krylov, etc.)

See <https://github.com/scipy/scipy/pull/195>.
Comments welcome.

Thanks,

Denis.