Our users say they love the fact that the scientific calculator use two types of power, one solar and the other battery so is ECO friendly and you are safe to take it into an exam without it failing not to work. The FX991ESPLUS has many functions that can be use to solve many problems. The number of memories has also been increase from 7 to 9. Another is random Integers where you specify the range of random integers you want to generate and the FX991ESPLUS will display them. 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 as this is one of the new functions. New CASIO Standard Scientific Calculators with Natural textbook display format!! 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.
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