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 atgoing from positive to negative. Which of the following is true about these critical points.

是一个maximum,是一个minimum

是一个minimum,是一个maximum

The function is concave down atand concave up at

The function is concave up atand concave down at

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