Which of the following input data (must be obtained/is needed] by the upgraded system that was NOT needed by the original system?

Are special characters that allow you to search for multiple words at the same time.

What role did women fill during world war ii?

For positive constants a and b, the force between two atoms in a molecule is given f(r) = −a r2 + b r3 , where r > 0 is the distance between the atoms. note: a and b are upper case letters. (a) find f '(r) = (b) find the critical point for f(r). r = (c) find f ''(r) = (d) find the value of r so that f ''(r) = 0.