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...
If we need to come up with a better theoretical formula, we might have to dig into this level of detail and more. At the moment, I'm more interested...
Have you followed the discussion and tried doing what I said to do? You can find a rather simple real solution; the complexity I mentioned is largely...
As he said, "ω, ω² are the cube roots of unity", that is, they are those two values you refer to; and the equation, x=1+ω^x+ω^(2x) is symmetric in ω,...
I've been doing cryptics for a few years, but only occasionally (I've worked halfway through two books of them), and have no confidence that I could...
You should be able to attach a picture; if you have trouble doing that, let us know specifically what goes wrong (including if you just don't see the...
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/).