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AP Calculus AB/BC
A positive second derivative means that the rate of change of the slope of a function is increasing. In other words, the function is getting steeper at an increasing rate.
This term refers to a graph that opens upwards, indicating a positive second derivative.
Increasing Acceleration: This term refers to the fact that the rate at which something's acceleration increases over time.
Convexity: This term refers to the property of being curved outwards or having a "hill-like" shape on its graph.