Actually I can't be comfortable using an algebraic unit
351665
I have been using Reverse Polish Notation for years.  It outdoes an algebraic calculator by orders of magnitude.  Actually I can't be comfortable using an algebraic unit.  You can solve equations from the inside out and it has many conversions factors ( eg: pounds to kilograms)  A great device, recommend it to anybody looking for a great calculator.
198564
I find this text hard to follow. I took AP calc in high school and got a 5 on the exam, and I got a near perfect on both my SAT and GRE math sections. I just say this so you have some context for the review. I'm pretty good at math and I already had a calc background. I am now re-taking calc I as a refresher and this is the book we are using. It shouldn't be that hard to follow, you would think. But I am confused WAY more than I remember ever being in high school. The way the author walks through examples has me re-reading things and crinkling up my face a lot, and I have to speculate about his reasoning for things. I really like to understand conceptually WHY things are the way they are. So, I'm not very satisfied with this learning experience. My teacher is also not as good as my high school teacher was so I feel like I might end up watching videos online to really re-learn this stuff well.
4150473
I really like the Dover series for this topic in general, but in comparison to others this one was more difficult to get into. It may very well be me, but I found it quite difficult to absorb and comprehend the material and also relate it to practical uses - although this wasn't really the case with the others, for example&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Differential-Geometry-Dover-Books-on-Mathematics/dp/0486667219/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Differential Geometry (Dover Books on Mathematics)</a><a data-hook="product-link-linked" class="a-link-normal" href="/Introduction-to-Vector-and-Tensor-Analysis-Dover-Books-on-Mathematics/dp/048661879X/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Introduction to Vector and Tensor Analysis (Dover Books on Mathematics)</a>

The materials seems quite comprehensive, mind you.
4680475
I can never understand why electronics manufacturers have to put a bunch of unnecessary "features" into whatever they make.  I wanted a simple digital scale to measure road maps, but after wading through the confusing instructions, punching button after button to set up time zones and such, I finally got to the map measurer part.  It required so many mathematical calculations to make the conversion to the proper scale that my head was spinning - and then when I used it on a local map where I knew the actual distances, it was way off.  On top of that, the last digit on the LED screen would only light up partway.  Poor quality, very difficult to understand and operate - I sent it back for a refund.
2637993
For as much as this cost, I couldn't get it to do half of the things it advertises.  I ended up using my $20 scientific calc and had more success.  I spent most of my time on YouTube trying to figure out how to save formulas for college algebra.  Many of them can not be saved.  If it did save them, I was unable to retrieve them for use.  Maybe it's in the settings and I just never found it, but I think that it should be able to recognize a problem that can only be answered in one format, it doesn't.  Most of the time it wouldn't give an answer, it just said "syntax error".  Definately not user friendly.
1410190
Very large, very heavy and a bit cumbersome in general. I can't use it much because I feel like my head is going to explode when I decline backwards.
4392867
Algebraic geometry in modern times is not an easy subject. A better introductory text is&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Introduction-to-Algebraic-Geometry/dp/0521691419/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Introduction to Algebraic Geometry</a>.
My beef with this type of Mathematical writing is old: the writer gives the student nothing but a new axiomatic language without "context" or contact with objective reality ( no real pictures of the geometry involved).
He also expects after we have read this badly written text to buy volumes 2 and 3? He is not alone in going over students heads in Algebraic Geometry.
I bought this hoping that it would give a decent introduction to Schemes.
It doesn't even give an a good introduction to Zariski topology or why
Zariski  (T0) instead of Hausdorff (T2) ... ? The examples, problems and  definitions are pretty bad too. If you want your grad students in massive depression while taking your course, use this as a text?  I bought this book after doing several weeks of searching for a cheap book
that covered the areas I wanted to learn.
I've pretty much come to the conclusion there are some very strange people in this field and very few real teachers?
If in you are presenting a subject in Mathematics in an Axiomatic form like this, you have to tell the people why the axioms/ theorems are as they are:  not just give definition in strange symbols  and prove using the same new notation.
I've seen worse than this text, but not by much?<a data-hook="product-link-linked" class="a-link-normal" href="/An-Introduction-to-Homological-Algebra/dp/B0000CKS0U/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">An Introduction to Homological Algebra</a>&nbsp;for example.
Presenting Zariski tangent space without a diffeomorphism definition
is just really bad Mathematics with no excuse in my mind?
Presenting Schemes without reference to Galois theory is not a very good idea either? Not mentioning that Algebraic geometry uses Zariski topology because it excludes the transcendental numbers ( no algebraic variety has root that is Pi or e). Some bridge to measure theory for Schemes
seems necessary, since the use of "spectrum" in the definition tends to confuse the student for other areas that are more concretely defined?
The father of algebraic geometry is Descartes,yet he seems to never be mentioned. Instead Grothendieck appears everywhere where things get most dense? I repeat, if you are approaching a subject axiomatically, you have to made plain the basis for those axioms. And algebra without algebra ( polynomials)  and geometry without geometry ( pictures)  is probably very confusing to most students.
1198385
I don't like this system. I can't seem to be able to know how to use it. it's not very practical at all.
555814
I just couldn't make this comfortable on my arm.
2236753
Thought this would be a good alternative to my regular calculator. My calc professor will let us use a graphing calculator on exams. Much to my dismay, this calculator is incapable of displaying exact values, unlike my MUCH cheaper non-graphing Casio calculator. Pretty ridiculous that I would actually have to bring 2 calculators to an exam to get full-functionality. Turns out you have to pay an additional $60 for the next model up to get a feature that my $17 calculator has. Very disappointing, and I will be returning and looking for an alternative.
4728268
This book is one of the reference books in Algebraic Geometry. The book is very hard to read because it requires a lot of previous knowledge. Chapter 1 is relatively easy to read, chapter 2, is not that easy and after this, I understood nothing. Some of the demonstrations are too sketchy and are almost close to the heuristics. From what I know, Dr. Hartshorne only taught a small part of his book at the graduate level. At the beginning of the 20-th century Algebraic Geometry over complex numbers has been developed by Castelnuovo and others. The book does not give simple examples and elementary proofs (even not fully correct) for these examples so that the abstract concepts come into light.
2437237
I am not very experienced at purchasing this type of exercise equipment, so the problem may be mine. I did not expect this to be so HARD. I can hardly do the exercises I want on it. I think I will have to buy another item.
2763845
Can't say I liked this book because I suck at math! But getting the book was the most painless part of my semester!
3059583
Had I known the level of mathematical technicality involved I would have never purchased this book. It is not a 'lucid' introduction at all; its a text for intermediate economic students. My advice is to avoid this book unless you have a good enough algebra required for  intermediate economics degree students. A better option would be Ernst Mandel's 'Marxist Economic Theory'.He really is able to give a lucid description of Marx's economic arguments in 'Capital' (it's out of print but you may be able to get a second hand copy),another book you might like to try is 'The Revolutionary Ideas of Karl Marx' by Alex Callinicos. His chapter on capitalism is quite comprehensive and includes most of the major concepts from Capital vols 1 to 3 including use and exchange value,surplus value,constant and variable capital,organic composition of capital,accumulation of capital,the crisis of capital via the falling rate of profit,overproduction,under consumption,and the problem of the transformation of value into prices(and not an algebraic equation in sight).
4004875
This text will freak you out at first if you have never done proofs, or linear algebra at a rigorous level. My professor said that linear algebra and mathematical maturity are definitively things to possess before attempting to deal with this text, and not having those two things was a disadvantage.

However, if you're on your own (as I have been in my study of math), I can recommend some great preparatory books.

I am working on some analysis and algebra and the following have helped me:

Modern Algebra and Trigonometry - Moore (may be out of print - great book though)

Elementary Real and Complex Analysis - Shilov (calculus, basic measure)

Linear Algebra - Shilov

those three texts should get you to a point of mathematical independence where you may conquer dummit.
3727290
It's way too labor intensive to set up.  I abandoned the project I was working for hand-numbering.  The printed directions are extremely hard to read, as was the diagram/illustrations.  You could not clearly see the various moving parts at pointed out in the directions.  Perhaps when I have an entire afternoon to devote to setting this up, I'll try again.
4243439
Beyond difficult to bring up passages since you have to start with the first chapter.  Do the math with a big book like Isaiah..it could take forever.