Chapter 6: Advanced Graphing Features — Advanced Keyboard

 

2.

Press Yto verify the

 

 

previously entered polar

 

 

graph equation, then press

 

 

Gto draw the graph.

 

 

Adjust the view by using

 

 

Zmenu items.

 

3.

Press @k.

 

4.

Press 1to select 1

 

 

Value. The graph is drawn

 

 

back on the screen again,

 

 

with the θ= prompt visible at

 

 

the bottom left side of the screen.

 

5.

Enter the θ value at the

 

 

prompt. Enter π, for example.

 

 

Be aware that θ cannot be

 

 

more than 2π (2π radians =

 

 

360 degrees).

 

6.

Upon pressing E, the radian r coordinate will be calcu-

 

 

lated.

Note:

When coordinate system is Polar, Param or Seq, only 1 Value is

 

selectable in the CALC menu.

Advanced

See Chapter 4 “Basic Graphing Features — Basic Keyboard” on

keyboard

pages 60 to 61 for details of the other sub-menu tools available.

specific sub-

 

 

menus

 

 

7 Inflec

Calculates the inflection point of the given graph and moves the

 

cursor to that point.

 

Example

 

1.

Enter the graph equation

 

 

Y1 = x3 – 3x2 + 2.

 

2.

Press @k7.

94

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Sharp EL-9900 operation manual Advanced, Specific sub Menus Inflec
Page 103 Page 105

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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