As a preservatives, Glacial Acetic Acid can be used in a wide variety of industries including: food production, beverage, pharmaceutical, agriculture/animal feed, and various other industries.
The difference quotient is a measure of the average rate of change of the function over an interval (in this case, an interval of length h). The limit of the difference quotient (i.e., the derivative) is thus the instantaneous rate of change.
Sum is to difference as addition is to subtraction. There is a similar relationship between product and quotient, with respect to multiplication and division. The sum of [math]a[/math] and [math]b[/math] is obtained by finding the value of [math]a+b[/math]. The difference of [math]a[/math] and [math]b[/math] is obtained by finding the value of [math]a-b[/math].