Math_Numerical_RootFinding | --Math_Numerical_RootFinding_Bracketing | --Math_Numerical_RootFinding_falseposition
Math_Numerical_RootFinding_falseposition Math_Numerical_RootFinding_falseposition( [array $options = null])
float|PEAR_Error falseposition( callback $fxFunction, float $xL, float $xU)