3 ms·The graph may still have gone up during 2017, but that doesn't mean we shouldn't worry about the derivative.by croon 9y agoThe graph may still have gone up during 2017, but that doesn't mean we shouldn't worry about the derivative.spodek 9y agoIf the value went up, the derivative would still be positive. I think you mean the second derivative.deleted 9y ago[deleted]croon 9y agoYour clarification is of course correct but the graph of the first derivative would be going down was my insinuation.