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5stars
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6ratings
79 reviews
Equation Solver
I bought the Casio FX-991 ES. Fantastic for using Newton's law of approximation to solve equations like sinδ = a + bcos(δ + β) (a, b, β constants). Just substitute the ANS key for δ in the equation and keep hitting the "=" button till the answer doesn't change (converges).Read full review
Verified purchase: Yes • Condition: new • Sold by: discountwatch-llc
Best Simple Display Calculator I've Used
Best non graphing calculator for engineering courses I've used. Best part is being able to plug in human readable fractions.
Verified purchase: Yes • Condition: new • Sold by: ahmed1164
Precise with great features
I'm a student and this calculator helps me a lot to accomplish the math exercises required by class. Many functions are included, more than I will need actually but I loved the design, the big screen, the price and the ease of use.Read full review
Verified purchase: Yes • Condition: new • Sold by: ahmed1164
Great for Digital Systems Design
I recommend this model for CS studies and Electrical Engineering. It's real easy to calculate in non decimal base: base 2 8 and 16 and to convert it back to decimal.
I think there are calculator models with a more robust screen. I guess that's why it's relatively cheapRead full review
Verified purchase: Yes • Condition: new • Sold by: easystreet_hangout
Silver star
Having the same type of calculator for last 15 years. This one is something like third generation, in my case
Verified purchase: Yes • Condition: new • Sold by: krazydeals2010
Outstanding value for money
It is probably the best scientific calculator in its category (scientific without graphing or Cas capabilities).
It is able to do pretty much everything a student or an engineer needs (complex numbers,polynomials,3x3 vectors and systems,definite integrals,trigonometry and simple variable calculations) with very easy to use interface and no overcomplicated combinations.Read full review
Verified purchase: Yes • Condition: new • Sold by: krazydeals2010
Buy this!
I had gotten the same kind for my older kiddo so felt comfortable getting it for the younger. They both love them and use them constantly In school. Excellent quality and price!
Verified purchase: Yes • Condition: new • Sold by: bondra
buy it won't regret it
Lots of useful fonctions old model we can't find anymore, newer are hopless/helpless ... Thanks i could find this one ... bless recommended
Verified purchase: Yes • Condition: new • Sold by: spiceshub39
Great math assistant
Great calculator with many features extremely useful in math. Would recommend to everyone!
Verified purchase: Yes • Condition: new • Sold by: ahmed1164
Good
I got the product in time and the product quality is also very good
Verified purchase: Yes • Condition: new • Sold by: discountwatch-llc