I have been busy on other things and not had time to work out proofs. But it is obvious that every parabola that has an extremum with a value of n is...
Short replies assume that you are intelligent and willing to work. The people who respond are unpaid volunteers and have other demands on their name....
Dont worry about trying to format math. There is a way to do it on this site, but it is tricky, and you need to focus on math rather than formatting....
The equal button on a calculator can be used in a way that is inconsistent with the meaning of an equal sign in mathematics. Moreover, decimal hours...