<p>I'm in the middle of chapter 5 of petersons calc ab and bc (first edition i believe, I know there is a second edition but I bought this one since I asked around and I was told that there isnt much of a difference between the two editions and the second one was double the price) But I keep finding typos, like it says ax when it means a^x. Thus, I get the answer "wrong" because I thought it was ax when i'm finding derivatives. Now, on the polar part, the derivative they gave is wrong and I even checked it on my ti-89. Did anyone else have trouble with this? otherwise I do like how the author explains everything and I'm trying to get ahead for this year so I will go over these things again but I want to learn it right the first time.</p>
<p>bump…i know you guys have used petersons :)</p>
<p>I have Peterson’s second edition as a PDF, so it might not have the same problems, but could you give the Example/Exercise number and page?</p>
<p>Yea sure, the biggest example was pg. 181, #3 in the problem set. if r(theta)=3-sin(3theta), at what values of theta is r’(theta)=1? the derivative and graph they give in the solution is different than the one my calculator gives. And the ax problem, where x should be an exponent is throughout Chapter 4 many times. For example, on pg. 129, for 2d, the function is listed at ex, when it really means e^x. </p>
<p>I guess these aren’t major problems since all review books have some typos but this is making me think my answers are wrong so idk.</p>
<p>I don’t know of the specific example you mentioned just because I don’t have the text in front of me, but I remember seeing multiple mistakes when I was going through the book last year.</p>
<p>In my version (2nd edition), the derivative for that problem appears to be correct.</p>
<p>It is possible that your calculator is giving you a derivative equivalent to what the book says. Does the graph your calculator gives have a similar shape to the one in the book?</p>
<p>no, the graph is different and the derivative isnt in a different form because the only difference is the cos(3theta); my book just says cos(theta). I believe this is in the denominator, but I’m not sure and I’m not home to check my book. I have the first edition so maybe it was fixed in the second edition?</p>
<p>and aboveblues, the book was still helpful though right? can i ask how you did?</p>
<p>Yeah, the book is incredibly helpful, it was my primary study guide. I self studied a 5!</p>
<p>Ok, I like the book otherwise and all review books have typos. I’ll just ignore them lol. Congrats on your score! I’ll definitely keep using it.</p>