<span>Inflection points are where the function changes concavity. Since concave up corresponds to a positive second derivative and concave down corresponds to a negative second derivative, then when the function changes from concave up to concave down (or vise versa) the second derivative must equal zero at that point. So the second derivative must equal zero to be an inflection point. But don't get excited yet. You have to make sure that the concavity actually changes at that point.</span>
Acute scalene because they are all smaller than 90 degrees but different lengths
if you are looking for the solution then is <em>Infinitely many solutions</em>
10y+x²
10(5)+(2)²
10(5)+4
50+4
54
Therefore, the expression has a value of 54.
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