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

I now have two of these calculators along with a Casio and HP. I took it upon myself to try all three leading up to my EIT exam. I almost always reach for the TI-36XPRO. It should be noted that there is a bug in the calculator regarding how it handles mixed fractions. Ive never considered this an issue for me personally because I calculate everything to a desired amount of decimal values. Even with the bug I consider this calculator worthy of 4.5 Stars. It is still very odd that TI hasnt attempted to address this issue with newer makes or models. I rounded up to 5 instead of giving it 4 stars. The multi-tap functions can seem tedious at first but consider that youll almost never have to dig through the calculators menus for most of your functions. The pros over the Casio are the multi tap and clearer button layouts and button prints. The Casio button layout and print are frustrating to even look at at. The same goes for the HP. This calculator is at par with the HP except it doesnt require the RPN learning curve which can be significant for some. I see the RPN debate as this...RPN observes order of operation which is the way you calculate. The Ti 36 and Casio inputs are linear which is similar to the way you write. You might write 10 lines of math for every couple of calculator calculations which means the linear input is probably more common and easier for your brain to input initially. A linear input calculator doesnt stop you from inputting calculations according to order of operation either which is where linear input calculators are better than RPN. With RPN you stuck to one input logic. The final Pro for this calculator is cost. I have two of these and will order a third one soon. All three calculators should cost me the same as one HP.

I love this calculator. I grew up with a TI-83 Plus and believe the TI-36x Pro is the best one for the FE Exam. I tried the Casio fx-115ES Plus for 9 months, per the advice of an excellent prof (mechanical and civil background), and while it has certain advantages I find the 4 line display on the TI-36x Pro alone is reason enough to use it instead. I can complete complex problems more efficiently and with less errors than with the Casio - it is easier to backtrack, check what was entered before, and select equations/numbers from previous lines to be carried into new calculations. With the Casio I would often accidentally clear the screen with the on button, out of habit, which deletes the previous entries from memory; even when this was not the case I found it difficult (impossible?) to paste prior entries into current calculations. Also, the Casios list of less-common scientific constants must be referenced to a numerical list of symbols (no names given) on the cover, while the TI-36x Pro lists constants with symbols/names spelled out in the menu itself - much more convenient. This calculator can accept up to 3x3 matrices and can solve systems of linear equations with three unknowns using the entry [A]^(-1)[B]. The way it handles complex numbers is also very convenient, allowing for easy conversion between rectangular and polar form. The only major downside Ive discovered so far is, in matrix mode, the TI-36x Pro cannot accept imaginary numbers as inputs. This is true of many other calculators as well (including the Casio fx-115ES Plus). Its problematic when analyzing AC electrical circuits using mesh (KVL) or nodal analysis (KCL). [Update: The TI-89 Titanium can handle these complex systems with cSolve (but is not FE approved).] One annoying aspect: there is only one button for storing answers as variables, so if you want your entry to be stored as anything other than x, you have to press the variable button repeatedly until the desired letter shows up (for example, for b, you have to press the button 6 times, which cycles x > y > z > t > a > b). [Update: Discovered 2nd -> Recall lists all variables - much faster for recalling them than cycling is. As far as I can tell, however, first-time storage (###->var) does require cycling as stated above.] This is only a minor qualm though; the overall benefits of this calculator easily outweigh the few negative aspects.

I love this calculator!!! Ive had it since Sept/2011. Before this calculator I had the TI-89 and loved how it could do anything I could want it to do. With knowing that I would be unable to use this calculator on the FE, I decided to buy one that they would allow so I would be use to it before the exam. I originally took the advice of a friend and went with a the Casio 115es. Being that I have had Ti products my whole life this was a huge learning curve. The calculator was nice but was not that user friendly! (almost felt like I needed a minor in programming to work it!) I was told that it would solve for variables but never could actually learn how to get it to do it. One day a friend in class showed me his Ti-36x pro and I was amazed at how easy it was to use! It did alot more then the Casio and was almost like having my Ti-89 back!! To be honest its easier then the 89 to operate and still solves for variables (along with alot of the other same functions). I have showed mine to my fellow classmates and they also fell in love with it. They always end up having me order them one. So far I have ordered 15 of these calculators and have not had one complaint out of any of them. I have tried almost all calculators allowed on the FE and this one is far ahead of the pack!!! Some Pros: The Biggest Pro is: Its pretty user friendly after you get sometime on it The ability to scroll through old computations See math expressions, symbols and stacked fractions exactly the way they appear in textbooks. Has nine physical constants programmed into it (like:Gravity, Speed of Light, Avogadros number, Ideal Gas Constant..) Has 18 Metric/English conversions Does integration and derivatives Gives you answers in decimals by default (unlike the Casio) but will convert to fractions If you turn it off and back on it still has your old calculations! (the Casio erases when it turns off!) If you are a TI user, you can easily adapt to this calculator. For the price you cant beat it!! I noticed one person gave it 2 stars. Let me just say, out of the 15 Ive ordered for people, I have yet to have one complaint!!! Cons NONE!!! If you are not allow to use a graphing calculator in your classes or you will be taking the FE one day, I recommend this calculator. It blows any other Scientific Calculator out the water!!!

Im not a math guy, I dont need a graphing calculator for what Im required to do mathamatically. Im a CAD student at a tech college who needs a scientific calculator for a little algebra and trig. I had been using a Casio fx-115ES for my assignments, which works fine and dandy, but it turned itself off so quickly while I was comtemplating my homework that the little calculators life was quite often in danger. While still scratching my head figuring out how to enter more operations, the Casio routinely turned off to save the battery, at the cost of LOSING whatever I had worked so hard (for me) at entering into it. I started writing everything down in a notebook so I could re-enter it when the Casio decided it was time for me to start from scratch one more time. That would not do. Enter the TX-36X Pro. The TI had a little learning curve for me, or so it seemed because I had learned how to use the Casio so thoroughly. The TI takes more button presses to do some calculations than the Casio, but it SAVES what you put in it. Turn it on, and the last thing you were working on is still there. I can scroll back to see things Ive entered hours ago, retrieve them and save myself having to type them in again. Ive scrolled back and found things I had done WEEKS before, retrieved them and used them in new calculations. That is worth the price of admission for me. I will never use 90% (or more) of what this calculator can do in the CAD occupation Im training for, but Id rather have it and not need it so I CAN have what this little beauty CAN do for me better than any other calculator Ive ever owned. Best of all, those sometimes long head scratches while working on my trig homework arent made even longer by having to redo and re-enter my calculations on a regular basis. The calculator itself seems well made, the buttons are crisp and the ones used most often are made of imprinted metal rather than having their function printed on them, which can eventually wear off . The case has soft feet to keep the calculator from sliding around on smoothe surfaces. Well made, easy to use, decent instruction manual, and saves your work when it turns off. Im putting my Casio in that drawer where I keep all the other stuff I might get around to using again someday, but probably wont ,,,,,,,,, };>{>

I needed a scientific calculator to do complex calculations for a Ham Radio license exam. The big positive for me in this case is that you cant program and store formulas in the calculator, or it wouldnt be allowed to be used on the test. This may be a huge drawback for other uses, but in this instance it was a plus. There was a learning curve to learn how to actually use and format entries, but it wasnt terrible. The book that comes with it is decent in that regard. Hard to beat for the price. Solar powered. The display is primitive, but easy enough to read.

Ive used a lot of calculators (scientific, graphing, and handheld computers), but this one does everything I need it to without needing to mess around with features I never use. Allowed throughout school and FE/PE exams too. Anything more complicated and Im probably using Octave or Matlab anyways. IMO faster to use than the Casio 991 series with basically the same features.

I had an old TI-30X that I was using for a while. I recently picked up the TI-36x and its functions have been a gamechanger for my engineering classes.

My daily driver was the ole reliable ti-84, but it was annoying doing calculations that involved complex numbers. As I had to constantly convert between radian and degree mode which was just not convenient when having to do tons of homework problems. Decided to buy the ti-36pro and it’s been incredible. My favorite part is the speed for which you can convert from polar to rectangular. It made problems involving the phasor domain a breeze to get through. So if you’re an EE student and aren’t ready to shell out almost 200 on a ti-inspire I would HIGHLY recommend this calculator.

College-age daughter told me the TI-83+ I bought in the 1990s finally failed, Sunday night before a Calculus test. We werent sure about borrowing one from the testing center, so ordered this for overnight delivery hoping it would show up before the test at 10 AM. It did! She says it does everything she needed the 83+ for, and its even solar powered so not a battery hog (it does have batteries as well).