Test: AP Calculus AB 1

1.

The derivative of a function crosses the x-axis going from negative to positive at .  The derivative crosses the x-axis once more at  going from positive to negative.  Which of the following is true about these critical points.

 is a minimum,  is a maximum

The function is concave down at and concave up at 

The function is concave up at  and concave down at 

 is a maximum,  is a minimum

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