IRC
I'm still somewhat confused about finding the instantaneous rate of change, especially when looking at a graph. I know if you are given the function yous use the difference quotient and a small h. However, when you have a graph is it more than an estimate? By this I mean do you do more than just find a close coordinate and use that value to find the slope?
posted by Carrie Desmond at 12:34 PM
2 Comments:
if you're jsut given a graph, there isn't really a correct answer because one person might get different answer than the next. So it all comes down to estimation, but remember there are estimations that are more correct than others.
To find the IRC at a specific time, draw teh tangent line and you can pick any point, not just any point close because you are only finidng hte slope for that tangent.
I find it easiest to draw a line that's as close to being tangent to the original line as possible, and then just find the slope of that line. If you're lucky it will go through two actual points and make your life easy.
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