Problem $1.$ Calculate the following formula using three functions other than main function.

$1+\frac{x}{1}+\frac{x^2}{2!}+\frac{x^3}{3!}+\frac{x^4}{4!}+$dotsdots$+\frac{x^n}{n!}$

Problem $2.$ Take a positive integer $)$ as input and produce the following result using one function other than main function.Problem $3.$ Write a program to print the following pattern. Use one more function other than main.Problem $1.$ Calculate the following formula using three functions other than main function.

$1+\frac{x}{1}+\frac{x^2}{2!}+\frac{x^3}{3!}+\frac{x^4}{4!}+$dotsdots$+\frac{x^n}{n!}$

Problem $2.$ Take a positive integer $)$ as input and produce the following result using one function other than main function.Problem $3.$ Write a program to print the following pattern. Use one more function other than main.