Casio fx-115ES PLUS Bedienungsanleitung
QUICK START GUIDE
2nd EDITION
fx-115ES PLUS
www.casioeducation.com
Press Cto clear out anything typed or the entire
screen.
Press zto input a negative value or variable.
To enter a fraction, press aand enter your
numerator and denominator. The nkey toggles your
calculation results between Standard and Decimal
forms.
The wkey allows you to choose between the 11
different modes on the calculator. qw(SETUP)
allows you to make changes to the calculator settings.
Use the Wkey to turn the calculator on, and press
qC(OFF) to power the unit down.
fx-115ES PLUS 2nd Edition Quick Start Guide
2
MENU NAME DESCRIPTION
COMP This mode performs general calculations.
CMPLX This mode performs complex number calculations.
STAT This mode performs statistical and regression calculations.
BASE-N This mode performs calculations involving specific number systems (binary, octal, decimal, & hexadecimal).
EQN This mode solves equations.
MATRIX This mode performs matrix calculations.
TABLE This mode generates a numerical table based on one or two functions.
VECTOR This mode performs vector calculations.
INEQ This mode solves inequalities.
VERIF This mode verifies a calculation.
DIST This mode performs distribution calculations.
The following explains the meaning of each mode on the fx-115ES Plus 2nd Edition:
fx-115ES PLUS 2nd Edition Quick Start Guide 3
To calculate and solve basic expressions, press w1to enter COMP mode.
To make any changes to the calculator settings, press qw(SETUP).
Inputting a Fraction & Converting to Decimal Form:
1. To solve , press
a7$8$+qa2$3$11=.
2. To view the solution as a decimal, press n.
Note: press nagain to see the entire decimal answer. Pressing
once more will display the fraction solution again.
To Find the Remainder of a Division Problem:
1.Tondtheremainderof7dividedby5,press
7Qa5=.
COMP MODE
fx-115ES PLUS 2nd Edition Quick Start Guide
4
COMP MODE
Absolute Value:
1.Tondtheabsolutevalueof-4,press
qcz4=.
Exponents:
1. To evaluate 34, press 3^4=.
Roots:
1. To calculate the square root of 25, press
s25=.
2.Tocalculatethecuberootof64,press
q^3$64=.
Storing Variables:
To store a value for any variable, press qJfollowed
by a variable, A – F. In this example, we will store a
value of 1 for the variable A.
1. Press 1qJz.
Note: When you store the value for the variable, you do not need
to press the Qkey prior to pressing the variable key.
fx-115ES PLUS 2nd Edition Quick Start Guide 5
COMP MODE
Calculating Expressions:
The rkey allows you to enter an expression with
variables, assign values for each variable and then
automatically calculate the expression, without having to
storevaluesforthevariablerst.
1. Enter the expression, 3A + B, by pressing
3Qz+Qx.
2. Press r.
3. Enter 5 for Aby pressing 5=.
4.Enter10forBby pressing 10=.
5. The values of A and B can be used to solve additional
expressions, without using r.
fx-115ES PLUS 2nd Edition Quick Start Guide
6
Solving Equations (SOLVE):
SOLVE uses Newton’s method to approximate the
solution of equations. SOLVE can only be used in COMP
mode.
Solve y = ax2+ b for x, when y = 0, a = 1, and b = -2.
1. Enter the equation by pressing Qn(Y)
Qr(=)Qz(A)Q)(X)d+Qx(B).
2. Press qr(SOLVE) to enter the SOLVE feature.
3. Enter the value for yby pressing 0=.
4.Enterthevalueforaby pressing 1=.
5. Enter the value of bby pressing z2=.
6. Enter an initial value for x, for this example, we will
enter 1, by pressing 1=.
7.ToexitSOLVE,pressC.
COMP MODE
fx-115ES PLUS 2nd Edition Quick Start Guide 7
Inputthefollowingdataandndthelinearregression.
(170,66) (173,68) (179,75)
Entering Data:
1. To enter the data points above, press
w32(A+BX).
2.Enterthex-valuesrst,pressing=after each value.
170=173=179=
3. Use the arrows to move to the top of the y-column
and enter the y-values, pressing =after each value.
66=68=75=
STAT MODE
To start a statistical calculation, press w3to enter STAT mode and use the screen that appears
to select the type of calculation you want to perform.
Note: When you want to change the calculation type after entering STAT mode, press q1
(STAT/DIST)1(Type) to display the calculation type selection screen.
fx-115ES PLUS 2nd Edition Quick Start Guide
8
STAT MODE
Finding a Regression:
1.Tondtheregressionequation,pressCto clear
the screen.
2. Press q1to display the Statistics Menu.
3. Press 5(Reg)tondthecoefcientsforthelinear
regression equation.
4.Press1(A)=tondthevalueofA.
5.TondthevalueofB, repeat the process.
Press q152(B)=.
6.Thevaluesofthecorrelationcoefcient(r), the estimated value of X , and the estimated value
of Y can also be found.
fx-115ES PLUS 2nd Edition Quick Start Guide 9
EQN MODE
Example 1:
1. Press 1to select a simultaneous linear equation
with two unknowns.
2.Enterthecoefcientsforeachtermineachequation
by pressing 1=2=3=2=3=4=.
3. Press =to solve for the variables.
4.PressRto see the solution for y.
5. To solve additional simultaneous equations with
two unknowns, press CC.
Equation Mode can be used to solve simultaneous linear equations with two or three unknowns,
quadratic equations, or cubic equations. Press w5to enter EQN mode and press the
corresponding number for the desired equation type.
fx-115ES PLUS 2nd Edition Quick Start Guide
10
Example 2: Solve 2x2–3x–6=0.
1. To choose a different type of equation to solve,
press w5to return to the initial Equation screen.
2. Press 3to select a quadratic equation.
3.Enterthecoefcientsofeachtermandtheconstant
by pressing 2=z3=z6=.
4.Press=to solve for the roots and the minimum.
5. Press Rto see the additional information
EQN MODE
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