Final answer:
To print a transfer function and obtain its numerator and denominator, use the 'print_tf()' and 'num_den_from_feedback()' functions.
Step-by-step explanation:
To print a transfer function and obtain the numerator and denominator for a transfer function when performing algebra/feedback on a system, you can use the 'print_tf()' function and the 'num_den_from_feedback()' function. The 'print_tf()' function displays the transfer function in a readable format, while the 'num_den_from_feedback()' function allows you to obtain the numerator and denominator of the transfer function.