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Casio FX 991ES PLUS

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Calculator 10-seater two-line display, battery power, 417 Integrated math functions
Price incl. VAT £21.61
Price excl. VAT £18.01
In stock > 5 pcs
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Warranty 24 months Code:  QS770o Product Number:  FX 991ES PLUS
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Casio FX 991ES PLUS £21.61 In stock > 5 pcs
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4.8
Rated by 424 users
5 324x
4 93x
3 5x
2 1x
1 1x
5 000+ Customers Purchased
98 % Customers Recommend
100% Reliability - very reliable product with low level of warranty claims
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Casio FX 991ES PLUS

CASIO's original Natural Expression Input Display and Natural Expression Output Display make it possible to display fractions, exponents, logarithms, powers, and square roots just as they are written in the textbook. The result is enhanced student comprehension and improved math class efficiency.The FX-991ES PLUS has a matrix display and solving equations has never been easier with new functions. Another is random Integers where you specify the range of random integers you want to generate and the FX991ESPLUS will display them. The number of memories has also been increase from 7 to 9. The FX991ESPLUS has many functions that can be used to solve many problems. Our users say they love the fact that the FX991ESPLUS use two types of power, one solar and the other battery so is Economy friendly and you are safe to take it into an exam without it failing not to work. One of the advantages that we are told about is that the result that you get you able to use in the next part of the sum without having to round up numbers or to re-type which can lead to errors. You are able to use the calucator to work backwards, such as in algebraic equations. This can make life so much easier. The high technical specifications make this the most powereful Scientific at this price point. You can use this calculator from School to University and on into work.


Main features:

  • Two-way power (Solar + Battery) - Solar powered when light is sufficient, battery powered when light is insufficient
  • Plastic keys - designed and engineered for easy operation
  • Natural V.P.A.M. display - display expression same as textbook
  • List based STAT-data editor - iewing and editing of input data in list format, showing data groups (x-data, y-data, frequency) and surrounding data
  • Multi-replay - quick and easy recall of previously executed formulas for editing and re-execution
  • 10 + 2 digits - 10-digit mantissa + 2-digit exponential display
  • Dot matrix display - High-resolution screen provides beautiful looking graphs every time

Functions:
Fraction calculations, Combination and permutation, Statistics (List-based STAT data editor, standard deviation, regression analysis), 9 variables, Table function, Equation calculations, Integration/differential calculations, Matrix calculations, Vector calculations, Complex number calculations, CALC function, SOLVE function, Base-n calculation, Integration, Complex number calculations, Differential, Vector, Matrix operations

Casio is a Japanese manufacturer of electronics and electronic equipment. Its history begins in 1946 in Tokyo. The company was originally a manufacturer of calculators, leading the field throughout the second half of the twentieth century. The company has expanded a lot, offering watches and audio equipment in addition to calculators. 


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Specifications can be changed without notice. Images are for illustrative purposes only. Retail Price (MSRP) means the manufacturer's/supplier's suggested retail price.

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Forum Casio FX 991ES PLUS
4.8
Rated by 424 users
5 324x
4 93x
3 5x
2 1x
1 1x
5 000+ Customers Purchased
98 % Customers Recommend
100% Reliability - very reliable product with low level of warranty claims
More Information
Albert, Brno 21/04/2013
Price large number of functions Without complex matrix of numbers is impossible to impose a feature
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Customer 08/11/2013
super
odporúčam approached Calculator For what I ever had No
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Michal, Horný Vadičov 18/04/2013
Contentment, a decent price calculator with many features for undergraduate and high-school students an excellent aid ... It takes a while until you add it to your taste (especially relating to more complex calculations), just give directions about 30 minutes and operate all what you will offer a calculator.
Design calculates definite integrals simple instructions Synoptic reckoning fashion through a complex calculation of derivation They could mend Newer type (if it is not), which envisages a double integral vicarious
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Kubko 26/03/2013
Great calculator. I have it for about three years and I with her excessively spokojny prove completely calculated equations with one unknown and things like that, just the middle school with the toy calculator, are strongly recommended :)
 
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Tomáš, Bratislava 28/03/2013
Super assistant for undergraduate :)
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Jiří, Praha 5 11/12/2014
Large clear buttons. Readable display. Generator and whole random numbers. Natural notation, eg. 2A ^ 2 is properly evaluated as 2 ^ * A second Frequency of values ??in the statistics. SUM function x (i-n). If it makes sense, returning results with absolute precision - in fractions of a odmocninách. At this price level, you will not find better. Not permitted in GCE (this of course is not her fault) The statistics feature is missing median, mode. The variation width must be manually calculate MAXX Minx. Has (unfortunately) advanced statistical functions such as chi-square, u-test, t-test, etc.
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Vojtěch, Česká Lípa 01/02/2013
All great. I bought a calculator for high school graduation, 14 days after buying banned calculator funkcema ... not negative calculators.
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Jakub, Praha 8 10/04/2014
Probably the best non-programmable calculator on the market today. Intuitive controls many functions (for high school students and for most undergraduate courses, if you are not on Matfyz, totally satisfactory), clear display, dual power. Perhaps just might be able to count on the nuts bigger than 3x3. It suits me very natural logarithm function button on an optional basis. I found two drawbacks. One silver color goes down over time, so the year used a calculator does not look very nice. The second is an error (if present at all Casio know this series - but such. Outstanding programmable Casio FX 5800P it does) in priorities: the expression 5/5 (5) evaluate the calculator as 0.2, although it should come out 5 (multiplication has precedence over division . The correct result should be corrected before the brackets explicitly write times, which in more complex expressions ignorant can cause unpleasant complications.
intuitive control of many functions can also nuts (but max 3x3) arranged display expressions can be written to and displayed in the same format as on paper silver paint was scraped mistake in priorities (before the bracket is the right priorities nuytno write times explicitly)
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Marie, Stod 01/01/2014
super No-being,
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Martin, Praha 4 01/11/2012
Large display and a much better overview in complex calculations to the older models of Casio. When switching to another mode erases the results of calculation on the display. When storing the result in memory also deletes the calculation of the display, which in older Casio did not happen.
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