sparkle123 Messages 172 Reaction score 0 Thread starter Apr 27, 2011 #1 Why is f(x)=(x-3)^2/(x-6) not concave up for x>6? It looks like it is from the graph.
Mark44 Mentor Insights Author Messages 38,139 Reaction score 10,726 Apr 27, 2011 #2 Why do you think that it's not concave up for x > 6?
sparkle123 Messages 172 Reaction score 0 Apr 27, 2011 #3 concave up is the wrong answer in a multiple choice question :)
Mark44 Mentor Insights Author Messages 38,139 Reaction score 10,726 Apr 27, 2011 #4 If we're talking about y = (x - 3)2/(x - 6), then the graph of this function is concave up for x > 6. Period.
If we're talking about y = (x - 3)2/(x - 6), then the graph of this function is concave up for x > 6. Period.
Mark44 Mentor Insights Author Messages 38,139 Reaction score 10,726 Apr 27, 2011 #6 It's been known to happen that the answers in the back of a book are wrong. In my experience, the higher-level math books have more errors in the answers.
It's been known to happen that the answers in the back of a book are wrong. In my experience, the higher-level math books have more errors in the answers.