Top positive review
Excellent CAS calculator that comes with PC software
Reviewed in the United States on September 1, 2018
For better or for worse, TI has a near monopoly on the educational market. Needing a graphing calculator for my high-schooler, I researched the venerable TI-84 series and settled on the new Nspire CX CAS. Coming from an engineering background, I actually used the HP48g series; however, because the use of TI calculators is nearly ubiquitous in high-school and college, I knew I had to get a TI calculator.
The NSpire CX CAS is an excellent calculator. It supports nearly everything that a Algebra 1, Algebra 2/Trig or Calculus student would need. The CAS (Computer Algebra System) system allows solving, expanding and factoring of algebraic equations symbolically. This is a great boon for students wanting to check their work. My son does the work by hand (which many teachers require) and then will check the final result using the solve function. Solving for roots of quadratics is as simple as entering solve(Quadratic,variable).
The best thing about this calculator is the PC software it comes with. When my son is doing his HW at home, he is able to use the PC and very quickly enter equations and check his work. Much faster than he would be able to on the calculator at school.
The calculator comes with a large library of built-in math functions, as well as the capability to plot graphs (including inequalities). It also has a built-in spreadsheet where one can perform plotting of discrete points and even allows one to perform a linear regression on the points. The calculator comes with a tiny getting started guide, which is almost useless. You will have to go online and download the real PDF manual from TI to be able to understand some of the basic functions of this calculator.
Overall, this calculator is much more advanced than the HP48gx I used when in Engineering college. I do however, prefer the RPN of the HP calculators. The CAS system is a very nice added touch, and unless you need the calculator for the ACT test, I would recommend skipping the non-CAS version and spending a few bucks more to get the CAS functionality.