A brilliant scientific calculator (Casio FX 991ES)

Member Name: Robmods

Product:	Casio FX 991ES
Date:	19/05/09 (119 review reads)
Rating:

Advantages: Wide range of functions, natural display

Disadvantages: LCD screen can be easily damaged

This is an extremely comprehensive calculator that contains a huge range of mathematical functions, and is only short of graphics capability.

In addition to the normal scientific calculator functions, this model has many notable features and modes. It has a complex mode that supports all basic mathematics on the complex numbers, and is intelligent enough to know that i^2 = -1. When working in the real numbers, the calculator is able to solve equations with one unknown variable.

For users in the physical sciences, the calculator has a bank of 40 constants, such as the Gravitational Constant and Avogadro's Number. There are also 40 base conversion, but these seem altogether less useful.

The calculator has a useful matrix processing function, which is able to calculate the determinant, dot product and scalar product of vectors up to 3x3 in size.

Casio's natural display is the default interface for this calculator and its realistic portrayal of notation is particularly enjoyable for roots and fractions, which are automatically simplified.

A useful final thought is that the calculator does not have a graphical function or textual memory, which means it is eligible for many university examinations, despite its power functionality.

Summary: An must-buy for university or advanced level mathematics