TEXAS INSTRUMENTS Ti89 Graphing Calculator Titan

Sehr gutes Gerät; da ich das Vorgängermodell hatte, habe ich mich wieder für den TI-89 entschieden. Einziger Kritikpunkt die Produktbeschreibung stimmt mit dem Lieferumfang nicht ganz überein Lieferumfang lt Beschreibung auf amazon: 4 AAA Batterien => check USB-Kabel für die USB-Schnittstelle => check USB-Kabel für die Verbindung zwischen TI-Rechner und Computer => check Handbuch => leider nein Produkt CD der verfügbaren Software einschließlich der frei erhältlichen Applikationen und der Handbücher als PDF => check Ein physisches Handbuch aus Papier war leider nicht dabei. Desweiteren täuscht das Titelbild (was ich allerdings nicht negativ werte), da das Gerät selbst in einem Karton statt in einer Plastikverpackung kam.

Ho acquistato questa calcolatrice per i miei studi universitari. Semplicemente perfetta, programmabile in tutto e per tutto e molto facile da usare. Certo all'inizio è un po difficile passare dalle classiche calcolatrici delle superiori a questa, ma una volta fatta pratica sarà essenziale per voi. Consigliata per studi universitari di matematica fisica ingegneria.

Está calculadora es de lo mejor con lo que debe de contar un ingeniero, estoy feliz de tener una de estas

Excellent. My son is using this for Calculus.

I was on the fence between the TI89 and the HP Prime. After downloading the Prime app and the 89 emulator and going through a lot of videos on to use both I went with the 89 because it seems to do a few key things more easily (in my opinion) than the HP Prime. I needed it to dy/dx easily and factoring on a test is always nice to have. I also like that it takes AAA batteries. Always replace them and find when you need them. The HP Prime kind of scared me a bit because it has a rechargable, but the problem with that is that you never know if in 2 years (the apx life span of the battery) if you'll even be able to find it. If you do find it how much will it be? With how inflation is, it could cost 10,000$ who knows. Having the IT89 in hand it feels nice and it's a lot easier to do calculations when you're not clicking with a mouse on the emulator. So far so good. I expect this to be a good investment.