I used this but didn't get the answer I was expecting. I believe I entered everything correctly and I suspect their possible answers may be in error...they have "cheat sheet" to show how the quizzes are done....going to take a look...I'm inclined to believe Mathematica is correct.
Doing Udemy courses...I got them at discount and finding to be very worthwhile.
Thanks for the help to get me in the correct direction...
Tim
