Monday, September 7, 2009

post 3

we learned many things this past week that i've picked up on pretty well. The first derivative test gave me some trouble but im getting the hang of that. andthe vocab of the graphs are easy. which is Increasing-slope going up; original, Decreasing-slope going down; original, Positive Slope- first derivative which is above, Negative Slope- first derivative which is below, Concave Up which means second derivative, Concave down which also means 2nd derivative, Horizontal Tangent the slope equals zero, Derivative above axis, Derivative below axis, Zero of derivative
Maximum-original, Minimum-orignial, Extrema. When the slope of a graph is positive the graph is moving from right to left and it is going up, which means it is increasing. when the slope of a graph is negative it is going from left to right and it is descending which makes it decrease. I've maintained the knowledge of all the derivative formulas even though we just were using em like a few days ago. the only thing i dont really remember all too well is the derivative test. i can't rreally remember all the steps w/out my notebook. if anyone knows any tricks to remembering the the derivative tests' rules that would be pretty helpful.

2 comments:

  1. ricky
    I dont know if there is a trick to help but if you use like the first letters or something to try to make one but my suggestion is to just study them and use them in examples to you get the hang of remembering where they go and how to use them.

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  2. First of all, you should take the derivative of the problem, since it is called the first derivative test. In most steps in our former maths, we usually set things equal to zero, so that's what you do next. I think just practing with problems and knowing what part of the first derivative test the problems are asking for will help you out a lot. I think when you get the hang of this, it'll just come second nature as to what you do next.

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