This book is very poor. I give it a poor rating because the solution manuals that compliment this book are very mediocre. The solution manual that came with the book (It came bundled with the text at my college bookstore) seems as though it was hastily put together. Some answers are wrong, have typos, or even lacking altogether. The solution manual only covers chapters 1-12. The remaining chapters are covered in another manual...that's where the above problems are thrown into plain view. In the second solution manual, some answers don't match, are missing, or wrong. For example, chapter 13 has two sections that are flipped around, which shows the haste in bringing out this book. I have nothing good to say about these texts. When Calculus 3 is over this semester, I have 660+ pages worth of TP...that's the only way I feel the purchased can be justified.