I would like to know how to generate a column which can fill the cells in the
order: FACT(1) ; FACT(2); FACT(3)... etcetera. Apparently it will not work by
dragging the cells down.

Also, I need to generate a cell which can perform the function of:
f(x) = e^x = 1 + (1/1!)*x + (1/2!)*x^2 + (1/3!)*x^3... which by means is the
exp fn of the maclaurin series.

any help or suggestions is very much appreciated.