public override RrFunction Integral(double basePoint)
{
var zeroBaseIntegrals = Enumerable.Range(0, abscissae.Length)
.Map(i => i == 0 ? 0.0 : values[i - 1] * (abscissae[i] - abscissae[i - 1]))
.Scan(0.0, (sum, current) => sum + current);
var zeroBasedIntegral = RrFunctions.LinearInterpolation(abscissae, zeroBaseIntegrals,
leftValue, values[values.Length - 1]);
return(zeroBasedIntegral - zeroBasedIntegral.Eval(basePoint));
}
public override RrFunction Integral(double basePoint)
{
return(RrFunctions.LinearInterpolation(new[] { basePoint }, new[] { 0.0 }, Value, Value));
}