I've received a number of answers to my question here:
two of them have the same number of votes. It appears that both answers (although different) might be equivalent to the answer from the text book even though they don't look the same. A someone who commented on my original question has helped me resolve the issue I had. How should I accept the correct answer? I'm thinking of the following options:
- Answer myself based on what I've learned from the comments on my original post.
- Try work out which of the equivalent functions can me most easily manipulated to the book answer and pick that.
Are there other options I haven't considered? Is it bad form for me to answer myself if the two highest rated answers are equivalent to the book answer?