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.
Difference between .eq. and ==. == and .EQ. are identical. The Fortran 2008 Standard, Cl. 7.1.5.5.1 Interpretation of relational intrinsic operations states: 2 The operators <, <=, >, >=, ==, and /= always have the same interpretations as the operators .LT., .LE., .GT., .GE., .EQ., and .NE., respectively. In FORTRAN 77 and earlier, only .EQ. exists. The == operator has been introduced with Fortran 90 (Cl. 7.2.3 Relational intrinsic operations, same text).