Q6: Matrix Trace You are given a function that takes a square matrix m and returns the sum of the diagonal values for matrix x. This function employs a nested 2D for-loop. Write a function trace single_loop that solves the same problem using only one for-loop using only oher def trace(x): sum0 for i in range(len(x)): for j in range(len(x)): sum += x[1] [j] return sum # Write functionality of function trace using a single for loop def trace_single_loop(x): # YOUR CODE HERE