Texas Instruments TI-Nspire CX II CAS Color Graphing Calculator with Student Software (PC/Mac)

This is the best calculator I ever purchased. The battery life is top-notch as I have used it for weeks on end without worrying about charging (keep in mind I dont use it everyday/ all day). The ability to learn how it functions is relatively easy. Operational videos on 3rd party sites will definitely provide you with the necessary insight. Lastly, the interface is okay as it can be overwhelming for someone new to the TI Calculator series.

I only wish I had bought this calculator sooner! I had a pretty old TI-84 for most of my engineering math classes and I hated it. With the inspire you can go back to previous calculations and change any value that you want and press enter and it recalculates it(honestly the best part because during an exam re calculating or calculating with a single different value manually can take a lot of time if you have a long equation and time is VERY critical in some of these classes), and when you hit enter it formats it for you so that you can make sure that you put in the values and parenthesis correctly. I took engineering statistics twice(the first time failing it with an F and the second time getting an A), and although I had changed my study methods the second time to be more effective, I definitely give part of the credit to this calculator.

First, it arrived quickly and in very good condition. Besides the manufacturers package (with the manuals and an USB cable) it was also sent in a bigger box with plastic airbags, so it was very good protected. Regarding the calculators performance, so far very good. I used to have the first nspire CAS, and this one is faster from the beggining, it boots faster than the old one. I got this one as replacement for the old one (I had an accident with a cup of coffee) and I will test it further in the next days but so far very happy.

This is a very powerful and professional calculator. I have been using the TI84 since middle school, and now that I am almost done with college (majoring in mechanical engineering), I thought it was time to upgrade to a more powerful calculator, and I can say that I am very impressed with this calculators abilities. I wish that I had this going through all of my math classes in college. Getting used to the keystrokes is very difficult and will likely take years for me to feel as comfortable as I do currently with my TI84, but it is worth it. I highly recommend this product for someone that is in advanced mathematics (Calc, Lin. Algebra, Differential Eq, Statistics, etc). I would not recommend this to someone in middle school (and maybe even high school) as this is a very advanced calculator and a lot of its features wouldnt even be used by a middle or high schooler. I hope this helps.

This thing is awesome. When calculating something like cos(pi/4), it automatically gives you sqrt2/2 instead of some long decimal. It also finds the derivative function rather than just the derivative at a point. Additionally, it will store an entire funtion, so you dont have to retype some long complicated funtion over and over, you can just hit (A), which the calculator knows is that function. These are things other calculators cant do. Some say that its hard to figure out, but its relatively easy to learn. I will note that a lot of this extra stuff is only with the CAS model of the nspire, so make sure you get that CAS version. Either way, this is a pretty awesome calculator. Plus, its approved for AP Calc tests!

Just what she needed

This is an incredibly powerful calculator, only really necessary for university level engineering or similar. I honestly wouldn’t recommend it for less than that because the menu based interface can slow you down and takes a while to learn. If you don’t need to do matrices of complex numbers in phasor form then get a TI84

Llegó en buenas condiciones . Buen producto.

Got this for my son who needed it for high school and college calculus classes. Many schools provide these as loaners for students as well.

Cons: - Screen is painful to look at; poor anti-aliasing and blurring issues. - A touchpad that makes selecting anything a PITA without accidentally changing the selection. - An enter key that is awkwardly located far from the touchpad. - Math keys are fused into franken-buttons (one key with a dead-space between the sides). - Very poor tactile confirmation that a key is even being pressed. - Cheap Playschool plastic case. - Glued-on rubber anti-slip feet likely to fall off with any regular use. - Not as light as expected despite being thinner. - Trig functions and commonly used constants are found in menus rather than broken out into separate buttons. Inexcusable design choice. - Alphabet keys are, astoundingly, not in standard keyboard order despite being arranged like one. Everyone has a smart phone, why would you not copy that layout? - Despite the beefy processor specs, everything feels sluggish. Noticeable input lag. Pros: - If the screen werent so terrible, the operating system would look good. - Full fledged file handler and tab manager is pleasingly modern. - Its a python interpreter and advanced math engine in a calculator. Thats amazing. Final thought: - TI needs to fire their hardware people for designing that franken-button layout. If the four math keys most used feel like hot garbage, thats a pretty big issue. - The anti-aliasing needs serious reprogramming. No functionality can make up for a screen that causes immediate eye-strain. - Replace the touch-pad with a d-pad. Youd improve the interface and save a couple bucks per unit at the same time.