Concave-up and concave-down are investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.
... htm http://tutorial.math.lamar.edu/AllBrowsers/1314/Parabolas.asp. ... a.) Does the graph open up or down? ... To see if the function is concave (open downwards) or ...
... then select Run from the Start menu) o Select View from the drop down menu o ... Graph Type: Parabola. Explanation: Its concave upwards and symmetric about x=2. ...
... we already know that this is where the maximum occurs since P(x) is a "frowning" parabola. ... indicating that the original function P(x) is always concave down. ...
... Since the coefficient of x^2 is negative, this function is concave down and has a maxima ... calculus yet, then it is a given that a minima of a parabola is at x=-b ...
