Re-write the following function so that a given XAND return the value of f(x).

Write a function that takes an integer input and check whether it can be expressed as the sum of two prime numbers. If it can be expressed as sum of two prime numbers then print those numbers. You also need to account for multiple combinations of prime number. Take a range as input from use and print all such number in that range. You can use as many helper function as needed. Sample: Enter range: 2 10 Range 2 to 10: 4: Can be written as 2 +2 5: Can be written as 3+ 2 6: Can be written as 3 +3 7: Can be written as 2 + 5 8: Can be written as 3 +5 9: Can be written as 2 + 7 10: Can be written as 3 + 7 10: Can be written as 5 + 5

I can't seem to do the nested IF function in column T3.

5. Write a function harmonic that will take an integer n as a parameter and return the result of the harmonic series: Γράψτε μια συνάρτηση harmonic που θα πάρει έναν ακέραιο η ως παράμετρο και θα επιστρέψει το αποτέλεσμα της αρμονικής σειράς: 1 1 -+-+-+ 3 + 2 For example, harmonic (2) = 1.5 and harmonic (3) = 1.833