Chapter 3: Scientific Calculations

The value shown on the display for the unknown variable does not have to be set to 0 to solve the equation.

The answer is displayed on the top line and the values of the left- hand and right-hand sides of the equation appear below.

8.Press e.

Returns you to the display for entering variables.

9. Press d8 e.

Substitutes the value 8 for B.

The cursor moves onto the next variable C.

10. Press @h.

You can find any unknowns in the same equation.

A˚B=C˚D

 

 

 

 

 

 

 

 

 

A=z

10.

 

 

 

 

A˚B=C˚D

 

 

 

C=z

2.5

 

 

C=

 

4.

 

80.

80.

Important notes

There are several important points to remember when you use the solver function.

To cancel calculation, press j when ‘calculating!’ is displayed.

Before entering the equation, the appropriate angular unit must be selected.

The calculator uses Newton’s method to solve equations. Due to this, there may be some equations that it fails to solve even though they are in fact solvable. (See page 123.)

The calculator stops calculating when the values it has obtained for the left and right sides of the equation become very close. Thus in certain cases the solution it gives may not be the real answer. (See page 122.)

In certain cases, the calculator may abort a calculation and display the

message shown on the right. (See page

 

 

 

121.)

- ERROR 02

-

 

CALCULATION

 

 

 

 

54

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Image 56
Sharp EL-5250, EL-5230 operation manual Error, Important notes

EL-5230, EL-5250 specifications

The Sharp EL-5250 and EL-5230 are advanced scientific calculators that cater to students, professionals, and anyone in need of a reliable tool for complex calculations. Both models are designed with a blend of functionality, portability, and user-friendliness, making them excellent choices for math and engineering tasks.

The Sharp EL-5250 is equipped with a wide range of features ideal for higher-level calculations. It supports over 500 functions, including trigonometric, exponential, logarithmic, and statistical computations. The calculator also includes built-in memory functions, allowing users to store and recall values effortlessly. The large, easy-to-read LCD display can present multiple lines of data simultaneously, enhancing clarity and reducing the need for repetitive calculations.

On the other hand, the EL-5230, while slightly less advanced, still offers a robust set of functions. This model is particularly well-suited for students in high school or early college, providing essential functionalities for algebra, geometry, and basic statistics. Its 240 functions cover a variety of mathematical disciplines, making it a versatile option for different educational needs.

Both calculators feature Sharp's unique "MathPrint" technology, which is a standout characteristic allowing users to view fractions, square roots, and other expressions in a format more akin to traditional textbook layouts. This technology greatly enhances comprehension and usability, particularly for visual learners.

The calculators are powered by dual power sources, utilizing both solar and battery power, ensuring reliability in diverse environments. The compact and lightweight design of the EL-5250 and EL-5230 makes them highly portable. Users can easily carry them in a backpack or briefcase without added bulk.

Durability is another aspect where Sharp excels. The calculators are built to withstand regular use, featuring a sturdy exterior. Additionally, Sharp provides a protective cover that helps prevent damage during transport, making these calculators a long-term investment for users.

In summary, both the Sharp EL-5250 and EL-5230 deliver exceptional performance with their extensive features and advanced technology. They are perfect for those who require reliable and efficient tools for various mathematical tasks, whether in education or professional settings. With their user-friendly designs and durability, these calculators continue to be reliable companions for anyone working with numbers.