When I first provided the book (?96), with it I provided for free download the answers to about half of the questions. The web page said something like, "If you are an instructor then write me and I'll give you access to the rest." But just how foolish that was quickly became apparent: telling who is acutally an instructor or someone learning on their own, and not someone just saying that, was not something that I could do.
Publishers reps seem to me to rely on paper mail, and an address like "Math Dept, St Michael's College" does provide some kind of proof. But I sometimes get emails like "I am a student in a poor country and the only way ..." and I simply am not saying no to that.
That last sentence also answers why I don't erase half of the answers.
Free texts are a different model and there are a lot of kinks.
The folks who wrote the book this thread is based on have done something great. (I teach Discrete and I had a look to see if I could use it.) But including answers is a problem to which I am unaware of a solution. Or maybe, it is just that expectations have to change.
Publishers reps seem to me to rely on paper mail, and an address like "Math Dept, St Michael's College" does provide some kind of proof. But I sometimes get emails like "I am a student in a poor country and the only way ..." and I simply am not saying no to that.
That last sentence also answers why I don't erase half of the answers.
Free texts are a different model and there are a lot of kinks.
The folks who wrote the book this thread is based on have done something great. (I teach Discrete and I had a look to see if I could use it.) But including answers is a problem to which I am unaware of a solution. Or maybe, it is just that expectations have to change.