In order to find the minimum/ maximum point of a function, I would take it's derivative and find critical points, points where the derivative is zero or undefined, and then put them on a number line and do strawberry field. If it's negative to the left of the point and positive to the right of the point, the point is a minimum, etc. When the denominator of your fraction is equal to zero, isn't that where you have a vertical tangent line and not a candidate for a min/max point?

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In order to find the minimum/ maximum point of a function, I would take it&#039;s derivative and find critical points, points where the derivative is zero or undefined, and then put them on a number line and do strawberry field. If it&#039;s negative to the left of the point and positive to the right of the point, the point is a minimum, etc.  When the denominator of your fraction is equal to zero, isn&#039;t that where you have a vertical tangent line and not a candidate for a min/max point?

Tristan Pittman · Accepted Answer

In order to find the minimum/ maximum point of a function, I would take it&#039;s derivative and find critical points, points where the derivative is zero or undefined, and then put them on a number line and do strawberry field. If it&#039;s negative to the left of the point and positive to the right of the point, the point is a minimum, etc.  When the denominator of your fraction is equal to zero, isn&#039;t that where you have a vertical tangent line and not a candidate for a min/max point?

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