3. (17 pts) Elvin is great mathematician, and he solves a lot of challenge exercises. While solving some expressions he faced some difficulties while trying with several numbers, so he wants to create a system to calculate such expressions. Your task is to help Elvin to solve the below expression and to give him a result with precision of 5 digits after the comma. Write a C program readable to Elvin by using several standard and user defined functions that are stored in a file and used in the main program. Name the file as "yourname.h and use the below prototypes. double summation(int,int); double product(int,int); int factorial(int); Explanation: You have sigma and pi notation where they start counting from 1 to N and you must skip when =3 only for summation and product functions. (hint: #include , power , square root) Result=VN * X_[(2 + x)! + i]? + NX* * 11-14[3 + x 4]*