Hey all! I'm just going back through an old calculus book I have, and while attempting one of the odd numbered problems (because I can check my answers, obviously) I came across a problem and I'm not entirely sure if I've made a serious mistake and completely goofed, or if my book is incorrect. It wouldn't be the first time, and it was a book my physics instructor gave me, and is an instructors first version several years old, but I wanted to check it with you guys. I've included a photo with my attempt. Hopefully it's clear enough to read - the limit is w as it approaches -k. Also, I've included it in precalculus, since it's a topic often covered in the final chapters of precalculus text, or at least was in my old precalc text, and I've read the template. Trust that you're not helping me in any actual course - this is purely recreational studying, and I have made an attempt to solve it, as you'll see.