[plt-scheme] HtDP Chapter 27

Hi All --

Anyone interested in proofing HtDP Chapter 27 exercise solutions?

Specifically, 27.3.4, 27.3.5, 27.3.6, which concern computing function
roots and areas-under-a-curve using generative recursion. The tests
I've developed are very basic, because the math involved in these
computations (I think) involves some calculus, which I never took.  So
although I feel good about the solutions,  I can't be certain they're
correct.

I've withheld posting my proposed solutions for obvious reasons, but
have copied them to a Google Doc which I can share offline.

Any help in proofing or developing tests would be greatly appreciated!

Thanks much,
Dave Yrueta