<p>Any advice for tuesday's test??? I need all the help I can get</p>
<p>If you studied a good amount of time then you will do just fine..ohh and dont forget the basics..Good Luck!!</p>
<p>Does anyone have a list of the basics I can work with...I know a lot of stuff I just don't know how to piece it all together</p>
<p>I can't quite think of a list of the top of my head right now but i know forsure you should reveiw some precalculus materials and make sure you understand the calculus concepts if i think of a list i will let you know..</p>
<p>do all the free response questions from collegeboards site... all the questions are bound to repeat again except the 6th one.. they experiment with new ones.
for example, i have noticed number one is about finding area, and disk/volume
a velocity vs t graph...
a rate of flow
a f prime, f double prime graph (find max, mins)
implict derivatives (vertical tangent)
do some of those problems you will see what i mean</p>
<p>Alright, I just suck at related rates.</p>
<p>me too. I hate max/ min related rates problems. I love area questions though.</p>
<p>I'm really hoping for some slope fields questions. They had one last year. I wish the whole free response could be area, volume and slope fields. I hate doing the other stuff. Have any of you noticed that the no calc part of the MC is easier than the calc part. Or is that just me?</p>
<p>that's because an error on the calc-part is probably related to ones use of a calculator. an error on the no-calc part is an error in mathematics. If you know your stuff, its easier to make a mistake punching in data. </p>
<p>No calculators '05!</p>
<p>So how exactly do u do slope fields...we didn't cover that in class...</p>
<p>have u guys noticed, and there's an example of this on the CB website, that some calc problems will give u answers, but there are more, and the only way u would know that is if you graphed the equation...</p>
<p>how is that fair???!!! and how do u know when to check the graph??</p>
<p>Do anyone of you know how to get the answers to the exams preceeding the 2004 exam on the collegeboard site?</p>
<p>"So how exactly do u do slope fields...we didn't cover that in class..."</p>
<p>You just plug the coordinates of a point into your differential equation and then draw a line to indicate the slope at that point. For example,</p>
<p>Let's say your differential equation (which is given to you) is:</p>
<p>dy/dx = (1/2)xy</p>
<p>So you'd take points that are of interest (that is, ones that the question asks you to draw in) and plug them into that. Let's say we have to plug in (1,0), (1,1), (1,2), and (1,3). We would plug those points into the differential equation and obtain, 0, 1/2, 1, and 3/2, respectively. We would then draw short lines of approximately those slopes at those points in the provided window, and that's all...</p>
<p>Sometimes a multiple choice question will have, as its possible answers, slope fields, and the question will be: Which of the following correctly represents the differential equation, dy/dx = whatever? And the same process obviously applies, only that now you'd be plugging in numbers to find which graph is correct...</p>
<p>And that's about it. They're very simple.</p>
<p>efelder: Use Google. Type part of the question in with quotation marks around it and you'll usually get some sights with solutions (but not the Scoring Guidelines).</p>
<p>slope fields...anyone??</p>
<p>THANKS DUDE.....it sounds easy</p>
<p>If you ever come up to a part in FR that you don't know what to do, it is likely to involve the answer to a previous part.</p>
<p>yea i find the mc questions easier than free response...
i am not smart, actually quite dumb, but i feel like i can get a 4 easily.</p>
<p>they dont ask a lot of different questions..
i am worried about physics..</p>
<p>Oh yeah one question....say you have y=5x and y=5x^2 both on a graph. to get the area from 0 < x <1 you have to use the integral of [f(x)-g(x)], with f(x) being the function on the top.</p>
<p>What I want to know is...if you are revolving this area around the line y=3, do you use the same equation, but square both f(x) and g(x) and keep them in the same order? for example pi[(3-f(x)^2) - (3-g(x)^2)] or do you flip the order of f(x) and g(x) because the line is on top of both functions.</p>
<p>I hope I'm making sense here, its hard to type it.</p>
<p>It's the one farthest away from the line squared (outside) - the one closest to the line squared (inside). If you think about it this is really what you do anyway, it's just for y=0.</p>
<p>Also, I don't know if it was a typo or not, but it goes (number - function)^2, not (number - function^2)</p>
<p>So then you reverse the order of the equation, right? so [f(x)-g(x)] for area, and [(g(x)^2)-(f(x)^2)] for volume....does this apply for all equations, or only when y is the given line of revolution??</p>