Chapter 8

Matrix Features

Within the Matrix features, up to ten different matrices can be entered.

To get to the Matrix features, press @m. Define and edit the matrices within this mode too.

1. Try it!

Three sheaves of the first class crop, two of the second, and one of the third are sold for 39 dollars. Two of the first, three of the second and, one of the third for 34 dollars. And one of the first, two of the second and three of the third for 26 dollars. How much did you receive from each sheaf of the first, second and third class crops?

(Chapter VIII of Chiu Chang Suan Shu - Nine

Chapters of Arithmetic Arts, 200 B.C., China)

Three equations can be derived as follows, containing three unknown quantities:

3x + 2y + z = 39

2x + 3y + z = 34 x + 2y + 3z = 26

x, y and z represent the price for each sheaf of the first, second and third class crops, respectively.

You can solve the above system of linear equations by using a matrix.

CONCEPT

1.Enter the coefficients as elements in a matrix.

2.Use the rrowEF function to obtain the reduced row echelon form.

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Sharp EL-9900 operation manual Matrix Features, 3x + 2y + z = 2x + 3y + z = 34 x + 2y + 3z =
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EL-9900 specifications

The Sharp EL-9900 is a remarkable scientific calculator that exhibits a fusion of advanced features, cutting-edge technology, and an ergonomic design tailored for both students and professionals. One of the standout characteristics of the EL-9900 is its extensive range of functions, boasting over 550 built-in calculations that cover various mathematical and scientific disciplines. This calculator is particularly popular among engineering and physics students due to its ability to handle complex calculations with ease.

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The EL-9900 is equipped with a wide array of mathematical functions, including trigonometric, logarithmic, and exponential functions. Notably, it supports fraction calculations, statistical analyses, and unit conversions. Its advanced programming capabilities, such as 36 programmable functions and the ability to store data, further enhance its functionality, allowing users to create custom calculations tailored to specific needs.

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Overall, the Sharp EL-9900 stands out as a versatile scientific calculator packed with features designed to meet the needs of students and professionals alike. Its robust functionality, clear display, and user-friendly design make it a reliable tool for anyone engaged in mathematical and scientific pursuits. Whether used for basic calculations or advanced problem-solving, the EL-9900 remains a powerhouse in the realm of scientific calculators.
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