Chapter 1: Before You Get Started

Using the solver function

You can solve any unknown variable in an equation by assigning known values to the rest of the variables. Let us compare the differences between the solver function and the simulation calculations using the same expres- sion as in the last example.

Example

What is the height of cone 3 if it has a radius of 8

h

and the same volume as cone 2 (r = 9, h = 8) in

 

the last example?

r

 

9.Store the result of step 8 on the previous page in variable V. Press j twice and ; < xV.

10.Input the equation (including ‘=’) in the NORMAL mode.

Press ;V ; =then input the rest of the expression.

You must press ; = ( m key), not e, to enter the = sign.

V = 13 πr2h

0.

AnsÒV

678.5840132

AnsÒV 678.5840132 V=1ı3πRŒH_

11.Press I 5 to move to the variable input display.

•Note that the values assigned to the variables in the last example for the simulation calculations are retained and displayed.

12.Press d to skip the height, and then press 8 e to enter the radius

(R).

•The cursor is now on V. The value that was stored in step 9 is displayed. (volume of cone 2)

13.Press u u to go back to the variable H.

•This time the value of H from memory is also displayed.

V=1ı3πRŒH

H=z 8.

V=1ı3πRŒH

V=z678.5840132

V=1ı3πRŒH

H=z 8.

21

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Sharp EL-5230, EL-5250 AnsÒV 678.5840132 AnsÒV 678.5840132 V=1ı3πRŒH, =1ı3πRŒH =z678.5840132, Using the solver function
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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.
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