Here is a discussion of this sort of problem, going into some depth for both a small problem like yours, and a large one (which would easily take the...
As I read this, the original problem (which you really should have stated for us, to give us context) probably involved an equation something like A...
I'm not sure whether the actual fourth-degree equation will be better to use than some preliminary form. For example, it is possible that if you just...
So, you are revolving the region bounded by these curves about the y-axis? And since both are defined by x as a function of y, the natural way is to...
You haven't said what makes one choice "correct". Perhaps you are asking this: if one set of 25 is considered correct (e.g. by being the combination...
I was a software engineer for many years, and have been teaching at a community college since 2004. Since 1998, I was a part of Ask Doctor Math, where many of my past answers may be seen (http://mathforum.org/dr.math/).