Program Plan: Following functions are used in the program: Cout: To display the explanatory text. Exp(): It is used to return the exponential value raised to the given argument. Pow(): It finds a raised to the power of b i.e. a b . Sqrt(): It will find the square root of the number. Following variables are used in the program: sFactorial: is used to store the factorial of number calculated using Stirling's method. number, n: is used to define the number for which we need to compute the factorial. facto: is used to store the factorial of number calculated using the normal method. Summary Introduction: Program will use the Main () method, which will first calculate the factorial of a number using the normal method and then use Stirling's formula to calculate the factorial of the same number. Finally, print the output. Stirling's formula used to calculate factorial is given as n ! = e − n n n 2 π n Program Description: The purpose of the program is to calculate the factorial of the given number using two different methods.

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Chapter 3, Problem 3PP

Program Plan Intro

Program Plan:

Following functions are used in the program:

Cout: To display the explanatory text.

Exp(): It is used to return the exponential value raised to the given argument.

Pow(): It finds a raised to the power of b i.e. a^b.

Sqrt(): It will find the square root of the number.

Following variables are used in the program:

sFactorial: is used to store the factorial of number calculated using Stirling's method.

number, n: is used to define the number for which we need to compute the factorial.

facto: is used to store the factorial of number calculated using the normal method.

Summary Introduction:

Program will use the Main () method, which will first calculate the factorial of a number using the normal method and then use Stirling's formula to calculate the factorial of the same number. Finally, print the output. Stirling's formula used to calculate factorial is given as n!=e−nnn2πn

Program Description:

The purpose of the program is to calculate the factorial of the given number using two different methods.

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