HP39GS Graphing Calculator

I purchased this for the symbolic capability. The manual is clean and the exercises work. It is easy to understand and a short time is required to learn each capability. The Manual impressed me. Many manuals are poorly written, not written for any audience, contain critical errors, in short, not really intended to be read. I have another calculator from HP that is a graphing calculator it had no printed manual. It has a steep learning curve as a result of the PDF manual where many examples simply do not work. This machine actually gave me the required information to do some work with the older calculator. The symbolic function has many limitations. The one I do not like is the limitation of ONE character per variable. This limits the work you can do where two character variables are used to help you know what they are. Otherwise it is a great machine.

Nothing wrong with this calculator.Good manual,good and easy interface. A bit heavy but all the graphing calculators have some weight. A lot of useful apps are included. There are some cons of this product which I do not want to share because they are just matter of personal preference. Overall it is a good purchase for anyone.

I bought this calculator because it is almost $100 CHEAPER than a TI calculator and it basically has all the same functions just you have to learn them. I did not want to shell out a hundred and something dollars for a calculator so I purchased this one for around $40. Like I said this calculator has all the functions as one of those TI calculators, just you have to learn how to use them. The only downside is that in a class full of people who have TI's, it is sort of hard to get help how to enter certain things because you have a different calculator. There are also a couple of improvements that I wish this calculator had, but so far so good! I recommend this to anyone who is looking to save money!

I am very pleased with this graphing calculator. I had to buy one for my grandson for school to use in math class. Everywhere I looked they want 50.00 all the way up to 150.00. I did not want to purchase it for that price so I went on the internet and found this one on amazon for only around 30.00. At that price it is doing what he needs to do for his classwork and if it gets lost or stolen I have not invested an amount that will break me. Thank you amazon. HP39GS Graphing Calculator

The batteries that were pre loaded in the calculator are not working.I had to get new batteries from meijer to switch on my calculator.The calculator was packed in 2009 and the batteries were having a lifetime of five years so quite natural that they would not work.I was not aware of this fact that packaging was done such a long time back.HP is no more manufacturing this model of graphing calculator.HP 50g and HP prime graphing wireless calculator are the only two model HP is manufacturing now.I hope my calculator will be covered under warranty but I am unsure since HP has stopped producing that.I highly recommend that if you are going for HP go for HP 50g or HP Prime since it would be easier to claim warranty and get your calculator fixed in case you encounter any problem with your calculator.

The truth is a very good product, which arrived in good condition with all components, manuals, cables and batteries software It is a commodity that you would recommend to all those who in one way or another is in a race engineering, architecture or any field of study ceintifico. Excellent quality and service Greetings and thanks HP39GS Graphing Calculator

BE CAREFUL The calculator doesn't come with a manual and they don't tell you that so unless you already know how to use it, beware! I still haven't been able to get it to work for my sin & tan problems--all I get is "invalid syntax". The manual being included would have made it a good purchase but without it the calculator is useless and I feel like I wasted my money.......

Every positive thing mentioned about this calculator in other reviews is correct, and I completely agree with them. It comes with a well-written and detailed manual, and the calculator itself is very user-friendly and has many useful functions that make the TI-84 seem prehistoric in comparison. However, this calculator is not reliable at all. HP does not support this product anymore. There is no warranty of any kind. The last date it was manufactured was 2006, if that says anything. After a little less than a year, the HP39gs started freezing randomly. The only way to unfreeze it is to remove the batteries. Now, the calculator will not start at all. I have my AP Calculus exam in a month and everything I have learned to do on the HP39gs must be re-learned on a TI. I have tried talking to HP tech support about it, and that is a nightmare in itself. You will spend hours trying to figure out how to fix an issue if one arises, and I don't think it's worth it. Also, if you purchase this calculator, expect to be on your own during any math class when the teacher explains how to do everything using a TI. I'd rather pay 100 dollars more and get the TI-89 Titanium than have to go through what I went through with this calculator.

輸入品でしたが、問題なく使用することができました。必要十分な機能です。

Il prodotto è ottimo considerando il prezzo contenuto; di base contiene numerose funzioni utili in vari campi (analisi matematica, statistica, finanza) e inoltre c'è la possibilità di scaricarne altre via internet. Sono intuitivi anche i comandi del linguaggio di programmazione, chi ha familiarità non avrà problemi a creare funzioni per conto suo. La guida di oltre 330 pagine fornita della HP è inoltre molto ultile; è chiara, fornisce molte indicazioni sulle funzioni e le illustra con degli esempi. La confezione contiene inoltre il software per il collegamento dell'apparecchio al pc e le relative guide multilingua, 4 batterie AAA (per il funzionamento della calcolatrice) e una batteria per la ROM, il cavo per il collegamento e una guida veloce in inglese . Sono molto soddisfatto del prodotto e non ho trovato particolari pecche se non quella che alcune funzionalità di base sono limitate all'inserimento di pochi input (forse per non allungare troppo i tempi di elaborazione). In conclusione consiglio questo prodotto e faccio i complimenti ad Amazon per averlo spedito in 3 gg dall'Inghilterra e per essere arrivato in perfetto orario.

Bought new, wouldn't power on even after changing the batteries and attempting to reset it. Seems solidly built, and was fairly cheap, so would probably have been good if it had worked.

It's important to correct the impression that this machine cannot be used in public examinations in the UK. The rules for exam use are detailed by the joint examinations council: see page 12 here [...] These are open to interpretation for all calculators. For sophisticated calcualtors such as the HP39GS the key issues are (a) does it have symbolic algebraic manipulation or is able to differentiate or integrate symbolically? The answer is NO. These facilities are only available in the HP40GS. Secondly can it communicate with other devices? Well yes. It has an infra red data transfer mechanism. However, this is useless in an exam setting as two such machines would need to be placed facing each other close at hand. In fact all graphing calculators (HP/TI/Casio/Sharp) have cable machine-to-machine connections which break this rule in equal measure. Hence, all exam secretaries must decide to ban ALL graphing calculators (which they generally do not decide to do) or only those with symbolic algebra (like the HP40GS, TI-nspire CAS, TI-89 etc.) So, buy it, love it, use it and take it into your A Level maths exam and do brilliantly. Show this detail your head of maths or exam secretary if needs be. (I was a head of maths for many years and have been working with graphing calculators since they began ...)

Ottima calcolatrice. Oltre alle funzionalità base, permette di effettuare numerose operazioni con numeri complessi come ad esempio: - operazioni matriciali - seni e coseni iperbolici - memorizzazione di numeri complessi.