posted by Kay .
Can someone please differentiate y = sin x / x for me?
What I did was put (sin x)(x)^-1 and used the product rule...
So for me it was (sin x)[-1(x)^-2] + [(x)^-1(cos x)]
Now as I'm looking at a similar homework problem I think my method may be wrong... If my method is wrong it looks like I don't really understand this too well. Help?
Your work is correct. There are often multiple ways to differentiate an expression.