There are times, however, when we are more interested in finding the function from which the integrand came (., finding the antiderivative) than in finding the actual change. Then we must recognize that the derivative of a constant is zero, so any arbitrary constant added to the integral vanishes in finding the integrand. Thus we may write ∫ − nRT dP nRT = +c 2 P P (A34) where c is an arbitrary, or unknown, constant. Such an expression is called an indefinite integral. 7/10/07 A- 131 . | There are times however when we are more interested in finding the function from which the integrand came . finding the antiderivative than in finding the actual change. Then we must recognize that the derivative of a constant is zero so any arbitrary constant added to the integral vanishes in finding the integrand. Thus we may write 1 - nRT ĩR- c A34 where c is an arbitrary or unknown constant. Such an expression is called an indefinite integral. 7 10 07 A- .
