Why won’t ed g enui ty let me move onto the next question? I got it correct but it won’t let me Move onto the next question

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.

Scanning the road can be thought of as a

Why is a multiview sketch drawinf different from other sketches like isometric, two point, and oblique