Texas Instruments TI-nspire CX II CAS Graphing Calculator with Student Software

Nice

This graphing calculator overall has good quality and the qraph points are usually correct. I have to have it for college work and so far it's been correct.

There is a moderate learning curve. The touchpad is great but it takes a little practice. The CAS has solved problems and formatted answers better than my HP49g and I highly recommend it. I think TI should make it easier to graph vertical lines. I was disappointed when it could not graph abs(x)<3. I had to graph x>-3 then graph x<3 using the text tool. I would be nice to be able to enter x= equations a easy as you can enter f(x)= equations. I teach math at a university and at a highschool and linear programming often has inequalities involving x<30 and the like. Also when there are several layers of inequalities it can be a little hard to distinguish the feasible region. TI could make it easier to change the background colors. The gray scale CAS model did a better job with the layered shading. Overall I would rate this calculator at the top of my favorite calculators.

This is the first TI product I have ever purchased. It is the first scientific/graphing calculator I have purchased. Several of the reviews gave warnings about the learning curve. I went in expecting it to be tough. It is. But that does not mean it was a bad purchase. I think that if you are a novice then this might be the ideal product for you. You won't have to relearn how you calculate. It seems like this is the direction that hi-end calculators are heading so why not jump in head first? Think of it like upgrading to a fancy new cell phone. You know you like that. This unit has a free downloadable version for your computer so you can use it in a larger size and explore features in a familiar environment. Be sure to make use of TI's website and watch the videos that user's have uploaded on youtube. I also bought the TI NSPIRE for Dummies book and it is a huge plus.

This is my second Nspire. The first one I bought from Amazon wouldn't charge so I returned it. Amazon wouldn't replace it so I bought one from WalMart. I'm still trying to get a refund from Amazon. The one from WalMart was slightly damaged in shipping. The display screen is marred. TI should have covered it with a film. They didn't but it's still usable so I'll keep it. I'm still struggling to download the software. I just finished my third unsuccessful attempt to download the student software. I teach math and have used the TI 83, 84, 85, 86, 89 Titanium and the 92. The Nspire is different and takes considerable effort to learn to use. This calculator is powerful and versatile but be prepared for the frustration of a steep learning curve.

The battery life is great, and it has so many amazing functions. Honestly, it makes me a little less motivated to learn the content, but technology has done this to society on many facets. I'd definitely recommend it for calculus, algebra, and stats.

Package was open, obviously a used product or returned product

if you are an engineer student buy this, but check first with the profesors to see if they allow this one This calculator is illegal if taking exams and will not be allowed so beware that if you want to buy this with that purpose

This calculator is great it has everything you absolutely need for any math class from basic algebra to calculus 3. It's a calculator that grows with you. [This review was collected as part of a promotion.]

This is a great calculator. The features are fantastic and I love being able to enter formulas exactly as they appear written down. This greatly minimizes errors during formula entry. The battery life has been a concern from some, but I have not really seen an issue. I used it ALOT in one week and only used half the battery. They say that it should last 2 hrs /day for 14 days and I'm using it more than that. I did have one hiccup when charging it for the first time that I'm not sure what happened. It only charged to 75% and never went further even after charging all night. After resetting it, it correctly shows a fully charged battery, but I'm not sure why the hiccup. One issue I have with this calculator is that it definitely is not for beginners. It takes a certain amount of know how to find what you're looking for. There is a Help feature, but unfortunately, there isn't any kind of per function help (eg. what exactly is the dbd function and what is the function expecting as input.) Instead, you have to go lookup the function on a computer. Also, there is NO PRINTED GUIDEBOOK. I don't get why this is a trend, but I'm getting tired of manufacturers not printing out a guidebook for a $140 calculator. This thing has a ton of features and most I don't know about because I despise having to read through a PDF on a computer. Plus, a word of warning not particularly of this calculator, but of Walmart. Walmart shipped this in a shipping bag. Not that big of a deal if it shows up undamaged, but there is almost NO protection to the calculator during shipping. In addition, they had to send me 2 because the first one never arrived. When UPS showed up at my door, the bag was empty which meant that I had to file a claim with UPS and notify Walmart so I could get another shipped out. Thankfully their warehouse is close so I didn't have to wait long to receive the replacement calculator.