Library for searching function root at given range.
Try Function Root Online
Look for function root from  
  to  
Result:
NuGet
Library can be also downloaded from nugetFeatures And Algorithms
This library uses numerical calculator library so can handle same functions at input.Algorithm used in library is a hybrid of bisection method and newton method. Thanks to that algorithm won't fail even searching roots for x^2 function and similar.
Example and usage
Take function f(x)=(x-3/2)^2Graph of this function shows that the root is somewhere between points 1 and 2:
You can use this library to find exact point:
string function = "(x-3/2)^2";
double xFrom = 1d;
double xTo = 2d;
Hybrid hybrid = new Hybrid(function, xFrom, xTo);
double result = hybrid.ComputeHybrid();
Example application
Download: here