## Types in MathNet.Numerics.RootFinding

Type Brent

Namespace MathNet.Numerics.RootFinding

Algorithm by Brent, Van Wijngaarden, Dekker et al. Implementation inspired by Press, Teukolsky, Vetterling, and Flannery, "Numerical Recipes in C", 2nd edition, Cambridge University Press

### Public Static Functions

#### doubleFindRoot(Func<double, double> f, double lowerBound, double upperBound, double accuracy, int maxIterations)

Find a solution of the equation f(x)=0.
##### Parameters
###### `Func<double, double>` f

The function to find roots from.

###### `double` lowerBound

The low value of the range where the root is supposed to be.

###### `double` upperBound

The high value of the range where the root is supposed to be.

###### `double` accuracy

Desired accuracy. The root will be refined until the accuracy or the maximum number of iterations is reached. Default 1e-8. Must be greater than 0.

###### `int` maxIterations

Maximum number of iterations. Default 100.

##### Return
###### `double`

Returns the root with the specified accuracy.

#### doubleFindRootExpand(Func<double, double> f, double guessLowerBound, double guessUpperBound, double accuracy, int maxIterations, double expandFactor, int maxExpandIteratons)

Find a solution of the equation f(x)=0.
##### Parameters
###### `Func<double, double>` f

The function to find roots from.

###### `double` guessLowerBound

Guess for the low value of the range where the root is supposed to be. Will be expanded if needed.

###### `double` guessUpperBound

Guess for the high value of the range where the root is supposed to be. Will be expanded if needed.

###### `double` accuracy

Desired accuracy. The root will be refined until the accuracy or the maximum number of iterations is reached. Default 1e-8. Must be greater than 0.

###### `int` maxIterations

Maximum number of iterations. Default 100.

###### `double` expandFactor

Factor at which to expand the bounds, if needed. Default 1.6.

###### `int` maxExpandIteratons

Maximum number of expand iterations. Default 100.

##### Return
###### `double`

Returns the root with the specified accuracy.