Function Fourier

Fourier(
    func: ChalkboardFunction,
    val: number,
    inf?: number,
    sup?: number,
    steps?: number,
): number
Calculates the Fourier transform of a function at a value within an interval.
Parameters
- func: ChalkboardFunction
  The function
- val: number
  The value
- Optionalinf: number = 0
  The lower bound
- Optionalsup: number = 10
  The upper bound
- Optionalsteps: number = 10000
  The number of steps for numerical integration
Returns number
Example
```
const pulse = Chalkboard.real.define((x) => Chalkboard.real.rect(x));
const coefficient = Chalkboard.calc.Fourier(pulse, 1, -1, 1); // Returns a Fourier coefficient
```
- Defined in Chalkboard.calc.ts:549