now, by noting that 2(h+2) is the common denominator,
now take the limit h -> 0 and you'll have the answer
There is no differencethere is another problem that says to use the alternate definition of a derivative where the numerator has f(x) - f(a), instead of (x+h). and to find the derivative at the point:
2. (with the same problem above.)
What Is The Difference and what accounts for that difference?
from the first one to the second one, you just have to substitute