Question about SoftMath Algebrator - Algebra Homework Solver (689076614429)
If the parabola has its concavity turned downward and it maximum value is lower than 0 then the value of the functions are always negative (never reach 0).
Similarly, if the parabola has it concavity turned upward, and its minimum value is positive, then all the values of the functions are positive (never reach zero). Thus if y is never equal to zero the function has no x intercepts.
The concavity is called by some people the mouth.
Posted on Oct 13, 2013
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Posted on Jan 02, 2017
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