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Home Q & A Board Science-Related Homework Help Mathematics
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jtw0019 jtw0019
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10 years ago
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?
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bufibufi
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10 years ago
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10 years ago
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
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10 years ago
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 (-) (+)?
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