Cual es la importancia de aplicar los pasos en el modelo de diseño en las actividades académicas?

What is a society that has moved to the internet rather than relying on physical media called

Octothorpe is another name for what common computer keyboard symbol?

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.