practicing some problems... this one isn't coming out.

who's wrong, the book or me:

book (Problem 9.6):
http://img4.imageshack.us/img4/1193/img0002ji.jpg

me:
http://img196.imageshack.us/img196/6128/imgkv.jpg

thanks in advance

 

ihaveaquestion,

who's wrong, the book or me:

You are correct, the book is wrong.

Ratch

 

Ratch, you are on your 911 post.