Sharp EL9900 manual Read this first, Always read Before Starting

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Read this first

1. Always read “Before Starting”

The key operations of the set up conndition are written in “Before Starting” in each section. It is essential to follow the instructions in order to display the screens as they appear in the handbook.

2. Set Up Condition

As key operations for this handbook are conducted from the initial condition, reset all memories to the initial condition beforehand.

2nd F OPTION E 2 CL

Note: Since all memories will be deleted, it is advised to use the CE-LK2 PC link kit (sold separately) to back up any programmes not to be erased, or to return the settings to the initial condition (cf. 3. Initial Settings below) and to erase the data of the function to be used.

• To delete a single data, press 2nd F OPTION C and select data to be deleted from the menu.

• Other keys to delete data:

CL

:

 

to erase equations and remove error displays

 

 

 

:

to cancel previous function

2nd F

QUIT

3. Initial settings

Initial settings are as follows:

 

Set up

(

 

 

 

 

 

 

 

 

): Advanced keyboard: Rad, FloatPt, 9, Rect, Decimal(Real), Equation, Auto

 

2nd F

 

SET UP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic keyboard: Deg, FloatPt, 9, Rect, Mixed, Equation, Auto

Format

(

 

 

 

 

 

 

 

): Advanced keyboard: OFF, OFF, ON, OFF, RectCoord

2nd F

 

FORMAT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic keyboard: OFF, OFF, ON, OFF

Stat Plot (

 

 

 

 

 

 

):

2.

PlotOFF

 

PLOTSTAT

 

E

Shade

(

 

 

 

 

 

 

 

 

 

 

 

): 2.

INITIAL

 

2nd F

 

DRAW

 

G

Zoom

(

 

 

 

 

 

 

 

):

5.

Default

 

ZOOM

 

A

 

Period

(

 

 

 

 

 

 

 

): 1.

PmtEnd (Advanced keyboard only)

2nd F

 

FINANCE

 

C

Note: returns to the default setting in the following operation.

(

 

 

 

 

 

 

 

 

 

 

)

2nd F

 

OPTION

 

 

E

 

1

 

ENTER

4. Using the keys

Press 2nd F to use secondary functions (in yellow).

To select x-1”:

 

 

 

 

 

Displayed as follows:

 

2nd F

x2

Press

 

to use the alphabet keys (in violet).

ALPHA

To select F:

 

 

 

 

Displayed as follows:

ALPHA

 

x2

 

2nd F x-1

ALPHA F

5.Notes

Some features are provided only on the Advanced keyboard and not on the Basic keyboard. (Solver, Matrix, Tool etc.)

As this handbook is only an example of how to use the EL-9900, please refer to the manual for further details.

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Contents EL-9900 Contents Always read Before Starting Read this firstIntroduction Using this HandbookExample Fractions and DecimalsBefore Pie Charts and ProportionsSlope and Intercept of Linear Equations 1Enter the equation y = x for Y2 Parallel and Perpendicular Lines 2View the graphs Slope and Intercept of Quadratic Equations 1Change the equation in Y2 to y = x 2+2 1Access the Solver feature This screen will appear a few 4Enter the values L=15,000, I=0.09, N=48 Access the Solver feature 200 15 π 10π1Access the Solver feature 5Solve for the height and enter a starting point Graphing Polynomials and Tracing to Find the Roots 1Move the tracer near the left-hand root = x 4 + x 3 5x 2 3x + Graphing Polynomials and Jumping to Find the RootsFind the next root Solving a System of Equations by Graphing or Tool Feature 1Access the Tool menu. Select the number of variables Entering and Multiplying Matrices 1Multiply the matrices a and B together at the home screen Solving a System of Linear Equations Using Matrices 2Calculate B-1C Solving Inequalities EL-9900 Graphing Calculator Solving Double Inequalities 2x 5 ≥= 2x 5 = 2x 5 and y = 7 intersect at 6,7 + y ≤ 2x + y ≥+ y ≤ + 2y ≤ 1 y ≤ +y ≥ 4 y ≥ 4 x + 2y ≤ 1 x 2 + y ≥Continuing key operations omitted If x ≥ Slope and Intercept of Absolute Value Functions3View the graph Solve an absolute value equation 5 4x = Solving Absolute Value Equations= 10, y = Solving Absolute Value Inequalities2nd F Calc 2 x = = 9.999999999 Note +3 1+3 Evaluating Absolute Value FunctionsMath Graphing Rational Functions + 1x Solving Rational Function Inequalities = y 2 + 2 = y = +√ x + Graphing ParabolasChange to parametric mode 2x + y+22 = Graphing CirclesGraph x 2 2x + y 2 + 4y = 2x + y 2 + 4y =For Y1 = Y1 2 for Y2, and y = -Y1 -2 for Graphing Ellipses View the graph Graphing Hyperbolas Zoom out the screen Key pad for the Sharp EL-9900 Calculator Key pad for the Sharp EL-9900 Calculator Sharp Graphing Calculator Step Sharp Corporation OSAKA, Japan