I am a little unsure if I have these correct. Here goes:

1. let g(x)=1/x - 1/x^2. Find the limit as x approaches 0. I came up with 0, but I also am thinking it might be -infinity. Are either of theses right?

2. let h(x)= x^2 if x<3 and 2x+3 if x>3. Find f'(3). I found f'(3) to be equal to 6. Am I on the right track here or not quite. I know I would need to differentiate the functions, but then I'm a little fuzzy...

Thanks for the help...