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Title: How can you tell if a quadratic function has no minimum value? Post by: jtw0019 on Aug 3, 2013 I have a math test tomorrow & cannot remember how to recognize if a quadratic function has a minimum/maximum value. I know how to find them I just don't know how to know that they are not there at all.
For example 6+3x-2x squared has no minimum value. But how do I recognize that? Title: How can you tell if a quadratic function has no minimum value? Post by: bufi on Aug 3, 2013 Content hidden
Title: How can you tell if a quadratic function has no minimum value? Post by: mhshell on Aug 3, 2013 if the number before x squared ( -2x squared) is negative or has a minus before it, the graph will have a maximum point instead of a minimum
Title: How can you tell if a quadratic function has no minimum value? Post by: fewtew on Aug 3, 2013 Sweetheart, that is a linear function.
That's y=x+6. If I am not mistaken, a parabola has no minimum value if it is shaped like an "n" instead of a "u." Which would have what sign (-) (+)? |