Sunday, October 4, 2009

post 7

most of the week that just passed was studying for the quiz on wednesday and on wednesday we got the study guides for the first nine weeks exam. the study guides include optimization, first and second der tests, and tangent lines.

A Tangent Line is a line which touches a curve at one and only one point. The slope-intercept formula for a line is y = mx + b,where m is the slope of the line and b is the y-intercept.

The point-slope formula for a line is y – y1 = m (x – x1).This formula uses a point on the line, denoted by (x1, y1),and the slope of the line, denoted by m, to calculate the slope-intercept formula for the line.

The first derivative is an equation for the slope of a tangent line to a curve at an indicated point.

to find max and mins you use first der test then plug the critical values into original functions to get y values then plug endpoints in to original function to get y values the highest y value is the absolute max and the lowest y value is the absolute min.

i know both theorems we learned a while ago. Mean value theorem and rolle's theorem.

im somewat confused on optimization and knowing which eqn is the secondary and which one is thee primary. other than that im good

4 comments:

  1. the primary is the one you are working to minimize or maximize.

    the secondary is any other equation you might use.

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  2. yeah, i the primary is the one you try to maximize or minimize, and the secondary is another one you may need to use. i think the secondary is used when you have more than 1 variable and you use it to make it into only 1 variable. sorry if that doesn't make sense,i could be wrong. just listen to what john said lol

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  3. The primary equation is the one you are minimizing or maximizing. The secondary one is the only other equation they give you. The secondary equation will usually be set equal to a number.

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  4. The primary is the one you will be working to solve (if that's what they ask you) and the secondary is the given one. :)

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