Casio fx-9860GII Graphing Calculator, Black

I bought this as a gift for my daughter and she loves it, she says she didn't understand how she went through high school without it. She's studying computer science and she says this is the best tool she has had to solve her math problems. Great power efficiency, the batteries last a long time in a daily basis use. Overall it is a great instrument, an useful tool for engineering students. At first hand it seems quite complicated to handle, but first impression doesn't last much. It has nice graphics and neat programs, with a large variety of programs and methods, and you can even program them yourself with basic programming skills. Pros: It is somewhat complete, has nice graphics tools and capabilities, the battery last long, it is programmable and has great alternatives for math writings forms. It has all basics and a large variety of methods, and you can find on internet a lot of programs for physics, economics, electrical solving, probabilistic and others Cons: It doesn't have much memory so you can't have many methods programs at once at the same time, meaning if you want to have the electrical circuits solver program and a Lagrange or New-Raph solver, or Gauss or Thevening among others, you have to choose one at the time because it won't be able to storage them all. And there are a few methods missing like Laplace transform, Inverse Laplace, Integral Asymptotics, Chrombach alpha and other advance methods in math, calculus and probabilistic. But the price is excellent

Casio has excellent calculators.

Great Product! Very easy to use. Awesome Functionality. This is one of the best education investments that i have ever made. Very happy with the purchase. The Calculator is simply great. I understand that in North America teachers and books only uses TI Calculators because is the tool that they have been using for years. Otherwise here in South America most of the High Schools/Universities uses Casio. I use to work with a Casio Graphing FX-7400 for 7 years and was really happy with it. Like my old Casio this new also do the graphing but it does twice as fast!. The FX-9860 Gii is a beast!!. Super fast calculations. The fact that comes with screen light are really nice!. Love the fact that come with 4 size AAA batteries so there is no need to recharge every week like TI or HP color screen calculators. I highly recommend it. Great Price Great Value. Thank you to Casio for the great work building this beast!.

So much better than my old TI-84 plus, and a lot cheaper as well. The casio can do everything that the TI can do and then some. On the TI you need to download special programs to do conics and to solve equations, but on the casio the functions are built in and easy to access. I actually find the interface a lot clearer than on the TI and don't get lost tryng to find certain functions. My only complaint is the lack of downloadable programs for it, but that's really not the calculator's fault. With the TI, you can fid countless programs, like riemann sum solvers, because TIs are more widely used, whereas it seems that almost nobody uses casios. However, other than that, the casio is by far my preferred calculator for my calc class.

Since my high school and college days, I have been fond on the Texas Instrument series graphing calculators (TI-82 and TI-83) for home use. However, I have had the persistent problem that I cannot see the display in dim lighting, and dust accumulates behind the protective plastic screen (at least on both of my TI-82s). There's no point to have a graphing calculator if you can't read the display without squinting. In contrast, I have found this Casio graphing calculator to be superior in terms of its display, specifically the crispness of the LCD and the backlight feature. You can also customize the power-off and backlight timing, which is convenient. In fact this calculator is the only multi-line calculator on the market that I could find with a backlight (though there are some guides on blogs and personal webpages on how to through the trouble of custom modifying a TI series calculator to incorporate a backlight). One minor complaint is that the buttons on this calculator are slightly smaller than surrounding plastic case, so they jiggle around slightly in a cheap, toy-like fashion.

I bought this calculator when I was finishing highschool with college in mind. despite not being allowed to use my calculator for many of my courses I have still had the opportunity to test out several interesting features. My major requires I take 3 courses of calculus (differential, integral and vectorial), one of algebra, one of statistics and a couple of econometrics. Many of the topics covered in these courses can be approached through the used of this calculator, for example: integrating equations with limits, plotting graphs, solving several systems of equations, etc. Although I have not been able to explore every function (every menu), I believe that this a great and complete graphic calculator. The interface is much more user-friendly than a TI and does everything a non-engineer might need (and maybe even everything for an engineer?). Last but not least, the service provided was great: no delays in shipping.

Good product

Wow! This calculator took me about 5 minutes to figure out. It is easily the most user friendly calculator out there. I love that there are large, dedicated buttons for the most commonly used functions. No (shift+option+menu location+choice) to find what you're looking for on this calculator. The functions you're looking for are either on a dedicated button, or displayed as an option on the function row. It was a toss-up for me between this calculator and the Prizm. I'm glad I chose this one and saved $40. I prefer the key layout on this one better than the Prizm. The Prizm has curved key rows and everything is printed on the keys, which under heavy use may fade.

Questa forma ci ha datto la scuola~~è molto comoda da usare~~mia fratello usa tanto tanto. Ba non so che scrivere

What a great calculator this is. OK its just a calculator, but even so! The screen, which is quite large, is divided into different menus for easy of topics.Speaking of size, this is quite big, the largest calculator I have every had, but that is what I like about it, because you can see previous calculations still on the screen at a glance. I also like that fractions are seen as written on paper, although you can decide in which way to see them on the set up menu. The manual is more of a tome (400+ pages) and comes on a cd, but I have found out most of the elements by trial and error. I also think the manual is not very easy to follow, I have found Youtube to be a better source of info as there are many videos to show how different elements work I also found a great site to add further small programs that help you calculate functions immediately, with just a few info inputs, like finding prime factors, or quadratic division, multiplication etc .... not sure if I am allowed to add a link but here it is http://gfxcprograms.weebly.com/grouped-programs.html the programs are free to download. You can also add Geometry, Physium and probability programs from the casio website. I did find it a bit tricky to add the programs, but got worked it out eventually. Again, info for that can be found on youtube. Very happy with this calculator and I would imagine it will last me into a maths degree too as the menu and abilities are so extensive.

Compared to the TI counterparty (in particular the TI84) it performs exactly the same functions but has an absolutely superior display. Unfortunately, many teachers claim the TI84, even if it is a model that is now completely obsolete.

Llegó a tiempo, en buenas condiciones y funcionando a la perfección. Sin duda alguna, es un excelente producto y a un buen precio.

Good product