Reviews for Graphing Calculator Keystroke Guide, Preliminary Edition

The average rating for Graphing Calculator Keystroke Guide, Preliminary Edition based on 2 reviews is 4 stars.

Review # 1 was written on 2021-01-13 00:00:00 Ben Richards Amazon third party 2009-07-22. I don't complain about $0.25 textbooks. You know, it seems that a lot of large third-party vendors seem to price their wares on Amazon based off the other offers listed. Over years of buying obscure (ie this doesn't apply to actively used material) scientific textbooks, I've noticed that either: a) All copies are priced reasonable-to-high, or b) There's an absurd peak of one or more copies (usually more than 1) at some extreme bargain price -- basically a bimodal distribution with blooming at the top end. Furthermore, a large number seem the product of estate sales (thus seeding many ridiculously low prices via liquidation agents). Conjectures: On average, a single highly-undervalued offering will be picked up before I find it, explaining very few singleton bargains of the extreme variety. Sometimes I get lucky and find the exception -- likewise, sometimes a merchant gets unlucky and prices based off the exception. Now, under the Law of Large Numbers this wouldn't hold water, because multiple merchants hitting the unlucky case before it's removed would be extremely unlikely (a classic exponential). BUT, we're not operating under large numbers, just a few nutty scientists with phat cash and dreams of phat libraries. So once one or two people get their copy, there's much less pressure on the bargain price, and it can multiply. So this kind of works out like Conway's Game of Life; if a price is low, on the next turn there will be a new copy next to it, but a glider might smash things along the way and it fizzles out (I would of course have liked to use a nuclear simile, but one tries to avoid using "glider" and "reactor" in the same sentence, whereas explosions are clearly a non-linear process).

Review # 2 was written on 2010-01-14 00:00:00 Carole Cagle a good book to learn