this week we reviewed.
Things that i do understand:
Tangent LIne- its simple. First step is to take a derivative, second plug in x value into that derivative, then you will get a slope. From there you take your slope and point and plug into the line formula.
Things that i dont understand.
I need more work with the limits and work with the optimization stuff. I get how to do optimizatin i know the steps i just always mess up getting the primary and/or secondary formula.
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okay so you should know these limit rules by now, but i'll just repeat them just in case. :)
ReplyDeletelimit approaching infinity
1. if the top degree is less than bottom degree, then it is equal to zero.
2. if the top degree is greater than bottom degree, then it is positive or negative infinity, you need to graph the function in your calculator to determine if it's positive or negative.
3. if the top degree is equal to the bottom degree, then you divide the leading coefficients.
I think you ask this question for fun.
ReplyDeletei'm with sarah. these limit rules are easy.
but it gives me comments, so here goes nothing.
if the exponent on top is bigger than the one one bottom, its infinity. take the graph to figure out if its positive or negative.
if the exponent on top and bottom are equal, divide the coefficents.
if the exponent on the bottom is bigger, the limit is zero.
ITS THAT EASY.
the limit approaching infinity is easy becuase if the degree is the same on the top and bottom then its the top coefficient divided by the bottom. if the top is larger its infinity and its the top is smaller its zero. i win :)
ReplyDeleteoptimization - set up primary and secondary equations. Then solve the secondary for a variable then plug it back into your primary. Once there you take the derivative and set it equal to zero, solving for that variable. Once you have that you then plug back into the secondary solving for the other variable, leaving you with both variables solved. After that you must remember to perform your primary operation, area, volume, perimiter, surface area...
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