public void FindMaximum_XSquared_ThrowsExceptions()
{
OneDimensionalFunction derivative = x => 2 * x;
GradientDescentExtremaFinder extremaFinder = new GradientDescentExtremaFinder(derivative);
double initialGuess = 3;
var calculatedMinimum = extremaFinder.FindMaximum(initialGuess);
double expectedMinimum = 0;
Assert.AreEqual(expectedMinimum, calculatedMinimum, Tolerance);
}
public void FindMaximum_SinX_ReturnsPiOverTwo()
{
OneDimensionalFunction derivative = x => Math.Cos(x);
GradientDescentExtremaFinder extremaFinder = new GradientDescentExtremaFinder(derivative);
double initialGuess = 0;
var calculatedMinimumLoc = extremaFinder.FindMaximum(initialGuess);
double expectedMinimumLoc = Math.PI / 2;
Assert.AreEqual(expectedMinimumLoc, calculatedMinimumLoc, Tolerance);
}
