please use the python file to answer 2,3,4

2. Give the Big-O performance of the foliowing code fragment for i in range(n): k22 3. Give the Big-O performance of the following code fragment: en while i 0 4. Give the Big-O performance of the following code fragment: for i in rangeCn): for j in range(n): for k in range(n): k2 + 2 5. Give the Big-O performance of the following code tragment