Function calculateSumApprox

calculateSumApprox(f, b, a?, iterations?): Decimal
Approximates the sum of f(n) from a to b using a midpoint riemann sum. See calculateSum for a more general function.
Parameters
- f: ((n: Decimal) => Decimal)
  The function f(n) to calculate the sum.
  - - (n): Decimal
    - Parameters
      n: Decimal
      Returns Decimal
- b: DecimalSource
  The upper limit for the sum.
- a: DecimalSource = 0
  The lower limit for the sum. Defaults to 0. The order is reversed because a is optional. Deal with it.
- iterations: number = ...
  The amount of iterations to perform. Defaults to DEFAULT_ITERATIONS - 10.
Returns Decimal
The calculated sum of f(n), as a Decimal.
- Defined in classes/numericalAnalysis/sum.ts:97