Advantages: Functions, colour, 2 way power Disadvantages: too complex to use
I bought this calculator for my A level examinations. It is terribly handy, I do a lot of maths and be it calculus, vectors, complex numbers or statistics, this calculator will help you a lot. Not only does it boast 403 functions, and most of the keys look like that should be on a UFOs spaceship, if you read the handbook and know how to access and use the functions it is great. These functions are not ones that allow you to cheat ( sadly :P) but ...
Babithas 26.06.2009
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Ciao members have rated this review on average: helpful Review of Casio FX 991 ES
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Quick review of Casio FX 991 ES
The functions are really great, especially the natural displays helps alot in doing calculations. The statistics, calculus and the matrix functions are really helpful. ...
taha85khan 01.12.2008
Ciao members have rated this review on average: somewhat helpful Review of Casio FX 991 ES
Full dot matrix display. 10+2 digits. 403 functions. 'GCSE' and 'A' level suitable. ... more
Formula entry. 7 data memories. 40 physical constants. Complex numbers. Fraction facility. Algebraic logic. Equation operating system. Statistical functions. Number bases. 24 parenthesis levels. Logic operations. Equation solver. Root solver. Linear regression. Hyperbolic. 40 metric conversions. Function menu system. Regression analysis. Matrix operations. Intergration. Numeric derivative. Table of function values. Mathematical functions include percentage, square root and memory. Quadratic/simultaneous equation facility. Slide on case supplied. Solar powered with battery back-up.
Postage & Packaging:free Super Saver Delivery Availability:Usually dispatched within 1-2 business days...
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