My professor today told the class(engineering statics) that we should invest in the ti-89 or an equivelant. He claimed that the ti-83 was good for middle school but not for University work. However, I was forced to buy a ti-83 because the math department at my school doesnt allow anything higher. When we studied statics in general physics it never seemed necessary to own a better calculator but Im not sure how much more detailed this course will be. Would you say it would be necessary to purchase a ti-89 for the class(engineering statics)?