Can it handle complex numbers in matrix ?

Yes. .or say within reason. Download the manual from Casio, its free and you dont need to buy calculator.. Look at page 114 and 107. Make sure you download fx-991CW...not fx-991.

¿Este artículo tiene garantía?

Good afternoon, I bought the calculators without a guarantee, but I really don't know if the product has a guarantee, although they should have a guarantee. Regards, AC.

when you turn off the calculator, the calculation history is deleted or not?

The data is deleted when you turn it off. It's the only thing that keeps it from being the perfect scientific calculator for me.

is there a ohms law calculator?

Well any calculator can "do" Ohms law. If ypur worried about remembering it, any programming calculator can store formulas for you...Calculated Industries (yellow calculators) makes 2 Electrical calculators, pretty sure both have Ohms law function key.

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Casio FX-991CW Advanced Scientific Calculator

Casio FX-991CW Advanced Scientific Calculator

Product ID: 556369443

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Details

Brand
Casio
Colour
Black
Calculator Type
Power source
Solar Powered
Screen size
2.25 Inches
Number of batteries
1 LR44

📊High-res display for complex data

📐Natural textbook display for clarity

🔢552 advanced functions including integration

Description

📐 Elevate your calculations—because precision is the new power move.

GLOBAL READY - International model supports multiple languages and standards, perfect for the globally minded professional.
TEXTBOOK ACCURACY - Natural textbook display ensures symbols and numbers appear exactly as in your study materials—no guesswork.
SEE MORE SOLVE MORE - High-resolution display lets you visualize spreadsheets and 4x4 matrix calculations with ease.
POWER PACKED FUNCTIONS - Access 552 built-in functions including numeric integration, differentiation, and polynomial solvers for advanced problem-solving.
SIMULTANEOUS POLYNOMIAL SOLVER - Tackle complex equations effortlessly with built-in solvers designed for professional precision.

The Casio FX-991CW is an advanced scientific calculator featuring a high-resolution display and natural textbook view for intuitive use. With 552 functions including numeric integration, differentiation, and simultaneous equation solvers, it’s designed for professionals and students who demand accuracy and efficiency in complex calculations.

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