definiteIntegralByLeftRectangles method
Definite Integral By Left Rectangles
n
- precision
Implementation
num definiteIntegralByLeftRectangles(int n, num lowerLimit, num upperLimit) {
final values = List<num>.unmodifiable(
_calculateMathNodeAtPoints(
this,
_stepsWithFirst(n, lowerLimit, upperLimit),
),
);
final sum = values.reduce((value, element) => value + element);
return ((upperLimit - lowerLimit) / n) * sum;
}