A test problem with its solution from the University of Connecticut: https://i72.servimg.com/u/f72/19/97/10/39/uconn11.png https://courses.math.uconn.edu/wp-content/uploads/sites/1169/2021/03/Exam2_practice_problems.pdf (Question 1) Solutions: https://courses.math.uconn.edu/wp-content/uploads/sites/1169/2021/03/Exam-2-Practice-Solns.pdf