Could you help me with them?

Thank you.

9. Access the 3rd element of the 2 nd row of the numpy array using indexing. 10. Create a sub-array of the numpy array by slicing it to include only the 2 nd and 3rd rows and 1st and 2nd columns. 11. Sort the sub-array in ascending order. 12. Create a copy of the sub-array using the copy 0 method. 13. Reshape the copy to a 1-dimensional array of shape (4,). 14. Use the concatenate function to join the sub-array and the copy along the rows. 15. Use the split function to split the concatenated array into two equal parts. 16. Perform a vectorized addition operation on the split arrays. 17. Use universal functions (ufuncs) to perform square and square root operations on the split arrays. 18. Use broadcasting to add a scalar value to the split arrays. 19. Use masking to set all negative values in the split arrays to zero