EL-9650/9600c Graphing Calculator

Solving a Literal Equation Using the Equation Method (Amortization)

The Solver mode is used to solve one unknown variable by inputting known variables, by three methods: Equation, Newton’s, and Graphic. The Equation method is used when an exact solution can be found by simple substitution.

Example

Solve an amortization formula. The solution from various values for known variables can be easily found by giving values to the known variables using the Equation method in the Solver mode.

The formula : P = L

 

 

I

-N

 

-1

 

1-(1+

 

)

 

 

 

P= monthly payment

I= interest rate

12

 

I / 12

 

 

 

 

L= loan amount

N=number of months

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Find the monthly payment on a $15,000 car loan, made at 9% interest over four

years (48 months) using the Equation method.

2. Save the formula as “AMORT”.

3. Find amount of loan possible at 7% interest over 60 months with a $300

payment, using the saved formula.

Before There may be differences in the results of calculations and graph plotting depending on the setting. Starting Return all settings to the default value and delete all data.

Step & Key Operation

Display

Notes

*Use either pen touch or cursor to operate.

1-1Access the Solver feature.

This screen will appear a few

 

 

 

 

 

 

 

seconds after “SOLVER” is dis-

 

2nd F

 

SOLVER

 

 

 

played.

1-2Select the Equation method for

 

solving.

 

 

 

 

 

 

 

 

 

 

2nd F

 

SOLVER

 

A

*

 

 

 

 

 

 

1 *

 

 

 

 

 

 

 

 

 

 

 

1-3Enter the amortization formula.

 

2nd F SOLVER P = L

ALPHA

 

(

 

 

a/b

 

1

 

 

—

 

 

(

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALPHA

 

1

 

a/b

 

 

1

 

 

2

 

 

 

 

 

 

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ab

 

-

)

 

ALPHA

 

N

 

 

 

 

 

 

 

 

 

 

 

 

(

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALPHA

 

I

 

 

⎟

 

1

 

 

2

 

 

 

 

 

 

*

a

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

)

*

)

3-1

Page 12 Page 14
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Image 13
Sharp EL-9600c, EL-9400, EL-9650 manual 1Access the Solver feature This screen will appear a few
Page 12 Page 14

EL-9650, EL-9600c, EL-9400 specifications

The Sharp EL-9400 and EL-9450 are advanced programmable scientific calculators designed for professionals and students alike. Renowned for their versatile functionality and user-friendly interface, these calculators are popular in the fields of engineering, mathematics, and the sciences.

One of the hallmark features of the EL-9400 and EL-9450 is their extensive range of built-in functions. These calculators allow users to perform a variety of mathematical operations, including basic arithmetic, statistical calculations, complex number operations, and calculus functions. They support both decimal and fraction calculations, making them suitable for diverse mathematical applications.

Both models come equipped with a large, easy-to-read display, enhancing user experience by allowing for clear visibility of numbers, symbols, and results. The display is particularly beneficial when working with extensive calculations or graphical representations, as it helps users track their inputs and outputs with ease.

The programmability of the EL-9400 and EL-9450 sets them apart from standard calculators. Users can create custom programs to automate repetitive calculations, save time, and increase efficiency during work or study sessions. This programmable capability is particularly advantageous for students tackling complex mathematical problems or professionals managing extensive data sets.

With their advanced graphing capabilities, these calculators allow users to plot functions and analyze their behavior over a defined range. The graphing feature is user-friendly, offering options to zoom in and out, providing a better understanding of mathematical concepts and aiding in visualization.

Another notable characteristic of the EL-9400 and EL-9450 is their robust memory function. These calculators can store multiple equations and values, enabling users to retrieve and re-use data without the need to re-enter it. This function is essential for tasks requiring multiple steps and intermediate values.

In terms of durability, the Sharp EL series is designed to withstand the rigors of academic and professional environments. These calculators are built with high-quality materials, ensuring longevity and reliability during extensive use.

Overall, the Sharp EL-9400 and EL-9450 stand out as powerful tools for anyone needing a reliable computing resource. Their combination of programmable features, comprehensive function sets, and user-friendly design makes them invaluable assets for students and professionals engaged in advanced mathematics and scientific calculations. With these calculators, users are equipped to tackle challenges and explore complex mathematical concepts with confidence.
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