Curious to know if anyone had the following problem with the ebook… For the EOC problems, negative signs are not displayed for the numbers within a table. I found this extremely frustrating after completing the problems, only to find that I have used the incorrect values. The solutions have the negative signs displayed but the original problems do not. Also, the summaries often lack the special characters within various formulas. I believe this should not be an issue after paying the substantial fees. Anyone with similar problems?