Difficult
The triangle example gave me a couple of problems. For part c (show it is possible to construct a triangle...), I'm not quite sure what the solution means. I felt like there needed to be more than a couple of sentences as an answer. For part d, I didn't even know where to begin. The problem seemed very tricky, even after I read how the book did it. I would also like to see the Bivariate Normal Density example worked out, since I feel like the book skipped a few steps.
Reflective
For the most part, a lot of the material in this section was concepts we already know applied to joint continuous random variables. Densities, distributions, and marginals are all analogous to their earlier definitions. It's nice to be able to see how the same concept works differently depending on the type of random variable(s) you have. The idea behind these concepts are the same in all cases, but the way you calculate them varies.
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