Texas Instruments TI-36X Pro Engineering/Scientific Calculator | 9.7 Inch | Black.

This is my favorite calculator for nearly all calculations. Some of my favorite features: 1. Just one keystroke to put the exponent on a number in scientific notation. Ive always been annoyed by the fact that I have to do 2nd EE on TI 83s and TI84s and TI30XIIs to do that. (Do NOT use the 10 to the x key for scientific notation; that puts numbers in two memory locations.) 2. The multiple keys that you can hit twice or three times to change the operation, for example if you hit the sin key once you can calculate the sine of an angle, but if you hit it twice in succession it becomes the inverse sine. Same with the cos and tan keys, as well as an ln log key, e^ and 10^, and others. 3. Being able to hop in and out of expressing numbers as multiples of pi rapidly, and in and out of fraction to decimals rapidly. There are other features I like that dont come to mind right now, but those are the top favorites for me. My gripe had been the silver color of the operation keys along the right side. (The divide by, multiplication, subtraction, and addition keys.) I fixed that by cutting a white label into a narrow strip, sticking it just to the right of those keys, and writing the operations on that so theyre easy to read. Otherwise I had to look close at those keys, and in some lighting situations they were too hard to see (virtually impossible in dim light). I thought maybe I could doctor up the indentations with a very fine paintbrush and black paint, but the label was quick and easy.

Great product. I just broke it accidently. Sorry.

Great calculator. Easy complex arithmetic. Calculate rectangular or polar coordinates directly. All my electronics students have one

Let me start by saying Ive been using the TI-84 plus CE calculator for 7 years now. However, as a civil engineering student in university, Im not allowed to use that calculator in my classes or on my exams because it has too many features that does the work for me. I also cannot use it for my FE or PE exams when I want to get certified as an engineer. So I had to downgrade and buy this one. If youre a civil engineering major, this is the next best calculator thats FE/PE certified. It has the most features and its the most similar to the newer calculator versions. After being so familiar with a calculator for 7 years, its hard to switch to another one. But it only took me a minute or two of fiddling around with the 36-X PRO before I got the hang of the different buttons and command locations. I also LOVE that I dont have to worry about charging it! I cant count the amount of times I would sit down in class or at home and take out my 84 plus CE for an assignment or homework and it would be out of battery. It was such a pain to remember to charge it. Note: Even if youre not an engineering major, and youre just in high school or college, get this calculator! I started using my TI-84 plus CE in 8th grade and these types of calculators are a lifesaver. Itll help you in the long run and save you a lot of time and effort instead of using a scientific calculator. It has so many useful functions can really help you when youre on crunch time in an exam or something like that. 10/10!

I hate math with a passion, but I am so glad I have this calculator.

Im not sure if they allow this type of calculator for the ACT. But it works well altough there are a few things I cant figure out. It helps a lot and its simple to use once you figure out where everything is but for right now Ill keep struggling.

Muy funcional

Very good product

Have use it for math test, it have most of the things that you need for the exam, lucky this time for a good test score.