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No hay artículos en el carroCursos recomendados de Facultad y Universidad, Ciencias, Matemáticas e Ingeniería. La pantalla natural del libro de texto muestra la fórmula y los resultados exactamente como aparecen en el libro de texto en una pantalla fácil de leer de alto contraste, indica decimales reapareciente. Perfecto para cursos de cálculo con plantillas de integración / diferencial. Las funciones incluyen, fracciones, factorización numérica, LCM, GCD, estadísticas de 2 variables, 8 tipos de regresión, cálculos numéricos complejos Base-n, Logaritmos con base definible, cálculos polinómicos y ecuaciones simultáneas, cálculos Matrix/Vector incluyendo matriz REF\RREF, función SOLVE. Muchas funciones matemáticas avanzadas realizadas con el toque de una sola tecla.
Robert Baker
Comentado en el Reino Unido el 23 de marzo de 2025
great
Victor M.
Comentado en México el 16 de marzo de 2025
Todo excelente mil gracias
Love Bollywood
Comentado en Canadá el 15 de febrero de 2025
I recently purchased the Casio fx-991ES calculator for my son, who is in university, and it has proven to be an excellent buy. Here's a detailed review based on our experience:Functionality: The calculator efficiently handles complex equations, matrices, and integrals, making it highly suitable for advanced mathematics and science courses.Display: The natural textbook display is a standout feature. It allows users to input and review equations as they appear in textbooks, which significantly enhances usability and reduces errors.Portability: Its lightweight design makes it easy to carry around, which is ideal for students moving between classes. The calculator's compact size ensures it fits conveniently in a backpack or bag.Build Quality: Made with good quality material, the Casio fx-991ES seems sturdy and durable. It’s designed to withstand the rigors of daily use.User Experience: The calculator includes all the functions my son needs for his coursework. The buttons are clearly marked and evenly distanced, which makes inputting data straightforward and quick.Value for Money: Priced right, this calculator offers great value for its high functionality and complex display capabilities. It’s an excellent investment for both high school and university students.In conclusion, the Casio fx-991ES calculator is a great choice for students who need a reliable and efficient tool for their mathematical and scientific studies. Its combination of advanced features, user-friendly design, and portability makes it a top pick for academic success.
Ronaldo (Always Reviewing)
Comentado en Canadá el 18 de abril de 2025
I absolutely love my Casio fx calculator! It’s reliable, easy to use, and perfect for both simple and advanced math problems. One of the features I really appreciate is the inside of the case. it includes, key math formulas that are super helpful for quick reference during study sessions or exams. It’s a great way to refresh your memory without flipping through notes. Overall, it’s an excellent tool for students at any level. Highly recommend!
Claudio Puviani
Comentado en Canadá el 21 de septiembre de 2024
The Casio fx-991ES is a huge bang for the buck. It's an advanced scientific calculator, which means that in addition to the usual basic scientific operations like trig, logs and exponentials, statistics, and probabilities, it also supports complex arithmetic, vectors and matrices, and numeric differentiation and integration. It's everything that the expensive non-CAS graphing calculators (I'm talking about you, TI-84 Plus CE) can do, minus the graphing and the programmability, but at about 1/8th of the cost!The fx-991 series has the added advantage of being one of the very few calculators that are allowed on the fundamentals of engineering exams, and of those permitted, it's the most powerful. Casio has an odd naming scheme for its models that play against it. The Casio fx-115 series and the fx-570 series are functionally the same calculator, but not all institutions will know this. For example, the NCEES exam board allows the fx-991 and the fx-115, but not the identical fx-570, simply because they justifiably can't be expected to track Casio's "creative" naming schemes. But the 991 is very well known everywhere, so it's a safe investment.Aside from being an excellent calculator, it's also esthetically pleasing, well designed, light, and compact. The 991ES has a fraternal twin, the 991MS that has a distinguishing difference. The ES has Natural V.P.A.M., which is a fancy way of saying that it tries to display equations as closely as possible as they would be written on paper, while the MS uses a less pretty form. But there's another more important difference: the ES will return the exact value of some results, while the MS will not. For example, the ES will return sqrt(2)/2 for sin(pi/4), which you can switch back and forth with its numeric approximation, but the MS will return only the numeric approximation of around 0.7071.If you're in the process of choosing a non-graphing, non-programmable, advanced scientific calculator, the closest competitors (excluding the identical other Casio models) are the Sharp EL-516 and the TI-36X Pro. You can't go wrong with any of these, and they're nearly equivalent in every respect, so your choice might boil down to personal preference, brand affiliation, or what your learning institution requires. I took the lazy way out and bought all three. My personal favourite of the three is the 991ES, but the Sharp is prettier (but bigger).Also, if you don't need the advanced functions (complex, vectors, matrices, calculus), the Casio fx-300ES is practically identical, but without those advanced functions; just the basic scientific ones (trig, etc.). And it's almost half the price.
Paul Osuji
Comentado en Canadá el 22 de noviembre de 2023
Well I love this calculator because it is a great tool to check your maths work if you understand the calculator manual. I bought this calculator because I saw on product discription it is had 4x4 matrix because I already have 3x3 matrix calculator casio but my friend wanted the 4x4 one. I placed an ordered for this calculator only to discovered it doesn't do 4x4 matrices. I spoke with a customer service about it thinking I was speaking with a reasonable person, she put in a replacement promising me she hard it corrected but for some reason i didnt believethat. tho I mentioned to her to verify this clearly before sending another but she ignorantly sent the same item twice. I had to return it but other than 4x4 matrix function my friend wanted I will recommend this calculator solid 9/10 for me. I used it and i never failed maths. It is a great too to verify your work
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