If the graph of a quadratic function opens down, the function has a minimum value. true or false?
1 answer:
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Answer:
Step-by-step explanation:
Let's follow up with the solution. Considering a triangle with the vertices ,
and
, have a look at the representation in the cartesian plan.
From this representation we can say that the area (A) of a triangle through the knowledge of <u>analytical geometry</u> is given by the determinant of the vertices divided by two, mathematically,
So, applying this knowledge we're going to have,
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