Texas Instruments TI 36X Pro Scientific

I found this calculator quite useful for various calculations.
The interface is very easy to learn, you can play with it and learn it eventually,but a manual with examples for each feature is available!
Features :
1)Conversion of most type of qty.s included.
2)Multitap feature is a definite plus point over Casio calculators.
3)Is able to find the regression equations for a data(yes you can enter in data and store in the memory), using linear, quadratic, logarithmic and exponential.
4)You can use it to define a function(say x^2) and give inputs and gives corresponding output in tabular form.
5)The calculator can calculate factorials upto 69!(in scientific notation, with appreciable precision). For 70 memory is overloaded.
6)Was able to calculate difficult definite integral(1 to 5,taninverse(x^2)) in 4 seconds!
7) Many scientific constants included!
8) 4 line display, easy scroll, and you can enter in any previous expressions in your current expression easily.
9) Adjustable Contrast.

Cons ->
1)Has matrix,vector, solving linear eqns systems, quadratic eqns solving feature, but cannot enter complex values in it.
2) Does not support complex no.s inside library functions like sin, cos.
3) Has an insert feature, which allows you to enter a character in between an expression, but we have to keep on pressing insert for inserting characters at different positions. It should have been 'sticky'.



Abhinav Rajagopalan
IIT Bombay, 2nd year, Aerospace Engineering

This is the best calculator for an engineer to buy.

This is an investment you will get great benefits from. Do not go for cheaper ones. Buy this one or the casio fx-911es. You'll know the difference when you start solving matrices.

The calculator is refreshing in all aspects - looks, usage and convenience compared to our usual Japanese calculators. Options were very easy to use the first time itself. It is definitely recommended for all engineers and mathematicians.

This 36 X Pro calculator is amazingly good for solving equations of any degree- thanks to very easy user interface and impeccable processing speed! Apart from the normal functions in a scientific calculators, TI comes with additional useful functions like, Prime Factorization, Summation, Product, Vectors, Matrices, Binary Operations, Conversion from polar to rectangle coordinates.

This Calculator is much more capable of dealing with strong manipulation, multiple variable calculations, matrix manipulation than any other Calculators . Its screen is very easy on eyes! TI has a much higher resolution, and natural print of expressions entered. Thanks to the four-line Natural Display with Math Print Mode which lets you type expressions the way you write. The "multiple tap keys", which lets you access multiple functions and variables from single key makes typing incredibly fast.

This is a very expandable calculator with an edge from its other competitors. Another significant feature is it’s "ans" key, which lets you copy answer from previous calculations and use it for future calculation.

I feel that it should have come with a slider and should have quicker shortcut keys for degree and radians.

TI’s 36X Pro calculator really scores well in terms of function coverage, ease of usage and stylish looks.
Functions like modulo and algebraic functions for finding gcd, lcm, prime factor, which are not present in any other calculators of this price range, are present in the TI Calculators. Very important statistical functions like normal pdf, normal cdf, binomial pdf, binomial cdf, poissons pdf etc are the distribution functions in this calculator. In addition to these, it has regression function as well. Casio Calculator lacks some of these functions. This calculator also solves bi-variate expressions, solving which is a very tedious and time consuming job, which could be very helpful for students during there exams when time is a major constraint. Function coverage is quite vast with functions in all areas like: Calculus, Algebra,Statistics functions, distribution functions, and also polar representation and modulo are something new that is there in this calculator which I never saw in any other calculators that I used so far.
Multi-tap keys are the highlights of this calculator, you don't have to use shift key every time to switch between functions which are most frequently used. History access is very convenient, plus the memory is longer lasting. The math-print function in this calculator makes it very easy for a student to carry out the mathematical functions like integration and differentiation in the easiest possible way.