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Best graphing calculators

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Graphing calculators are a necessity to understand the advanced functions of so many engineering and science fields. These products will put you at the head of the class. They all feature ample displays, and, in many cases, there are large buttons that make it easy to enter calculations. The Casio FX-991EX is our best overall pick due to its battery life and versatility.

Best overall

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Casio FX-991EX

Perfect for advanced functions in class or in life

The Casio FX-991EX will help you with your functions no matter where you are, thanks to its solar power and battery backup. Included are an incredible 552 mathematical calculations, including equation, matrix, Vector, inequality, probability, and complex number calculations. The incredible resolution makes it easy to see the results when you punch in numbers.

Casio recommends this calculator for advanced GCSE students at A level or higher, allowing you to use it for physics, engineering, chemistry, and similar fields. Its fast processor can whip through calculations quickly, making it possible for you to focus on problem-solving.

Best design

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HP Prime G2

Sleek, slim and literally metal

The brushed-metal design of the HP Prime G2 is slim, making it easy to carry wherever you need to go. Included is a large, 3.5-inch multi-touch display. The alphanumeric keyboard has large buttons, making it easy to punch in equations on the fly. A powerful lithium-ion rechargeable battery and 256 MB flash memory will help you with challenges such as studying for the IB Diploma Programme exam, for which the calculator is approved. 

Best interface

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TI-84 Plus CE-T Colour Calculator

Colour display makes it easy to see your calculations

The TI-84 Plus CE-T Colour Calculator has a high-resolution colour display to help you see everything you're calculating. A MathPrint mode will do representations just like a math book, such as the display of fractions in tables and matrices. There's plenty of high storage capacity for apps and a built-in rechargeable battery that can be juiced up by the USB.

Bottom line

Using the Casio FX-991EX will put you ahead in your mathematical understanding. Literally hundreds of pre-programmed calculations are available, ranging from probability to matrix equations. The resolution is powerful and elegant to look at, which will make it easy to keep track of your work.

Problem-solving is a snap in fields ranging from physics to chemistry, especially at your A level. The calculator will not only help you in creating calculations but also in interpreting them.