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

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!.

Good product

I could not decide between this calculator and the TI-84 Plus CE, so I bought both. I found the fx-9860GII to be a more competent calculator for undergraduate mathematics for the following reasons; 1. It gives exact answers for trig and square root problems (the TI only gives decimals). This is my #1 biggest problem with the TI84 Plus CE. 2. You do not need to open a seperate app to graph inequalities. The TI requires you to change to a different app, which is very clunky. 3. Handles fractions *way* better --> simplification, dedicated fraction key, fraction/decimal conversions. 4. You can use any letter of the alphabet to name a matrix (this is handy because it better supports matrix naming conventions). The TI only supports some letters. The only issue I found with the fx-9860GII is the fact that fractional values displayed inside a matrix are *displayed* as decimal (but thankfully stored a fractions). The TI-84 Plus CE had a much prettier display, however the monochrome display of the Casio was much easier to read. The TI did have one advantage over the Casio, it will display fractions inside a matrix. I also prefer the mat finish on the Casio, as the super glossy finish on the TI84 Plus CE looks and feels cheap, and it attracts fingerprints.

It may not be the standard, but it does everything I need it to. Unfortunately, since it isn't a TI, the professors have no idea how to use it, so digging up the instructions and using Google will be necessary to learn certain functions and formulas, but the UI is easy enough to use once you learn it and the price is solid for what you get. You can also get little apps and games and do some programming on it, but I haven;t bothered with that in all honesty.

A perfect calculator for those in college. I bought this calculator to use in calculus, and yet, I couldn't find a problem with it. The calculations are made in a glimpse and the natural display ability is perfect for using in college, while other calculators will exhibit certain functions; i.e sum of roots, multiplications of fractions, in decimal, this calculator has the ability to make the operation, simplify and exhibit it, just like an ordinary math textbook. One suggestion that I give to CASIO, is to stop using disposable batteries, instead, make it, using lithium batteries, just like those in smartphones. Nonetheless, if you need a calculator that doesn't have a CAS system, this is perfect for you.

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.

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.