answer should be in MATLAB

Question 3 (25 Points) - Write a matlab function called my Factorial Function. This function should accept one input parameter and one output parameter. This function should calculate factorial value of given input parameter using while loop and return a result as output parameter. This function should not accept negative numbers as input parameter. You should check with if structure. After definition of my Factorial Function, you should calculate the formula given below. The number N should be taken from a user. 1!+2!+3!+...+N! Example: Example: Write a number: 4 Write a number: 5 Result is 33 Results is 153