#### Problem 34E

34. The table gives the number Nstd, measured in thousands, ofminimally invasive cosmetic surgery procedures performedin the United States for various years t.

(a) What is the meaning of $N^{\prime}(t) ?$ What are its units?

(b) Construct a table of estimated values for $N^{\prime}(t)$.

(c) Graph $N$ and $N$ '

(d) How would it be possible to get more accurate values for $N^{\prime}(t)$ ?