Question 7520
The value of a determines its relative fatness. As you increase the value of a, the graph of your function rises faster, resulting in a thinner curve. As you decrease the value of a, you are slowing down the rate at which your graph is growing, thus giving your curve a fatter appearance.


Actually the "cutoff point" is a = 1, which is considered normal. Anything less than 1 is considered fat. Anything greater than 1 is considered skinny.