Chapter 4: Basic Graphing Features — Basic Keyboard

: The expression can be represented as a graph.

= : The expression cannot be drawn as a graph.

•Move the cursor pointer to the “=” sign and press Eto change between to-draw and not-to-draw.

Note: To switch the window back to the calculation screen, simply press the #key.

G: Draws a full-screen graph based on the equation(s) entered in the Graph Equation window. To cancel the graph drawing, press O.

Note: If no equations are entered in the Graph equation window, only the vertical (Y) and horizontal (X) axis will be displayed upon pressing the Gkey.

T: Displays the graph values in a table. The default sample incre- ment value of the graph’s X axis is “1”.

Z: Displays the ZOOM menu. Within the ZOOM menu, various preferences can be set for the graph appearance on zooming in/ out .

The menu items with each function and the sub-menu items are described below:

A ZOOM

There are a myriad of tools under this menu item, by which the graph can be zoomed in/out in various styles. Press “A” within the ZOOM menu to select this menu item.

1 Auto According to the WINDOW setup, the graph will be zoomed in by adjusting the “Ymin” (the minimum Y value) and “Ymax” (the maximum Y value) according to the “Xmin” (the minimum X value) and “Xmax” (the maximum X value). When this item is selected, the graph will automatically be redrawn.

Note: The “Auto” sub-menu item is directly affected by how the WIN- DOW items are set up. Refer to the Wkey section in this chapter to learn how to set up the Xmin and Xmax items.

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Sharp EL-9900 operation manual Zoom
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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.

One of the key features of the EL-9900 is its 2-line display, which allows users to view both the input and the result simultaneously. This dual display enhances usability, especially when dealing with intermediate steps in calculations. The calculator also includes a built-in 12-digit LCD screen, which ensures clarity and precision in reading numbers, making it easier for users to work for extended periods without straining their eyes.

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.

One of the more modern technologies incorporated into the EL-9900 is its solar-powered function, which is complemented by a battery backup, ensuring that the device remains operable in varied lighting conditions. This environmentally friendly design reduces the need for frequent battery replacements, making it a cost-effective choice for users.

In terms of design, the Sharp EL-9900 boasts a slim profile and lightweight construction, which makes it portable and easy to carry. Its durable casing ensures that it can withstand the rigors of daily use, whether in a classroom setting or a professional environment.

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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