Replying to Calculus Help............

I'm doing a worksheet and these are the last 2 and I'm really tired and don't know how to do them. I know it's a stretch considering most of NS is 12 and semi-retarded, but I thought someone might know. Thanks. We're doing derivitives by the way.

1. What is the derivative of y=x+sin(xy) in terms of x and y, at any point on the curve?

2. f(g(x))=x, f(2)=7, and f'(2)=6. What is g'(7)?

If you can get any of these, thanks, if not, I'm gonna have to go ask someone smarter