Oct 20, 2022 · Oct 10, 2022 · Oct 11, 2022 · Oct 12, 2022 · Oct 12, 2022 · Oct 12, 2022
diff --git a/Maths/ExponentialFunction.js b/Maths/ExponentialFunction.js
 /**
 * @function exponentialFunction
 * @description Calculates the n+1 th order Taylor series approximation of exponential function e^x given n
 * @param {Integer} power
 * @param {Integer} order - 1
 * @returns exponentialFunction(2,20) = 7.3890560989301735
 * @url https://en.wikipedia.org/wiki/Exponential_function
 */
 function exponentialFunction (power, n) {
  let output = 0
  let fac = 1
  if (isNaN(power) || isNaN(n) || n < 0) {
    throw new TypeError('Invalid Input')
  }
  if (n === 0) { return 1 }
  for (let i = 0; i < n; i++) {
    output += (power ** i) / fac
    fac *= (i + 1)
  }
  return output
 }

 export {
  exponentialFunction
 }
diff --git a/Maths/test/ExponentialFunction.test.js b/Maths/test/ExponentialFunction.test.js
 import { exponentialFunction } from '../ExponentialFunction'

 describe('Tests for exponential function', () => {
  it('should be a function', () => {
    expect(typeof exponentialFunction).toEqual('function')
  })

  it('should throw error for invalid input', () => {
    expect(() => exponentialFunction(2, -34)).toThrow()
  })

  it('should return the exponential function of power of 5 and order of 21', () => {
    const ex = exponentialFunction(5, 20)
    expect(ex).toBe(148.4131078683383)
  })
 })
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,25 @@
		/**
		* @function exponentialFunction
		* @description Calculates the n+1 th order Taylor series approximation of exponential function e^x given n
		* @param {Integer} power
		* @param {Integer} order - 1
		* @returns exponentialFunction(2,20) = 7.3890560989301735
		* @url https://en.wikipedia.org/wiki/Exponential_function
		*/
		function exponentialFunction (power, n) {
		let output = 0
		let fac = 1
		if (isNaN(power) \|\| isNaN(n) \|\| n < 0) {
		throw new TypeError('Invalid Input')
		}
		if (n === 0) { return 1 }
		for (let i = 0; i < n; i++) {
		output += (power ** i) / fac
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		fac *= (i + 1)
		}
		return output
		}

		export {
		exponentialFunction
		}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,16 @@
		import { exponentialFunction } from '../ExponentialFunction'

		describe('Tests for exponential function', () => {
		it('should be a function', () => {
		expect(typeof exponentialFunction).toEqual('function')
		})

		it('should throw error for invalid input', () => {
		expect(() => exponentialFunction(2, -34)).toThrow()
		})

		it('should return the exponential function of power of 5 and order of 21', () => {
		const ex = exponentialFunction(5, 20)
		expect(ex).toBe(148.4131078683383)
		})
		})