Casio FX 115 MS User Guide

FX 115 MS Training guide

Tools FX 115 MS Calculator

Handouts Applicable activities Other materials Quick Reference Guide (inside the calculator cover) Key Points/

Overview

 Advanced scientific calculator  Two line display  VPAM to show formulas as in textbooks

(Visually Perfect Algebraic Method)

 Complex number calculations  Statistics mode including standard deviation and regression  Base conversions and calculations

References the Casio FX-115 MS User’s Guide Casio FX-115MS Scientific calculator

FX 115 MS Training guide

Content

Key Points/ Overview Modes Initializing the calculator Basic Arithmetic Calculations

Making Corrections During Input Replay Function Replay Copy Order of Operations Display Format (FIX, SCI, NORM) Fraction Display Decimal-Fraction Conversion Angle Display Percentage Calculations Degrees/Minutes/Seconds Engineering Notation Powers/Square Roots/Cube Root, nth roots/Reciprocals

Memory Calculations

Answer Memory Consecutive Calculations Independent Memory Variables Clearing Memory CALC Memory

Probability Calculations/Random Number/Factorials

Permutations and combinations Random number generation Factorials

Trigonometry

Trigonometric/Inverse Trigonometric Functions Hyperbolic/ Inverse Hyperbolic Functions Convert Radians to Degrees Coordinate Conversion

Logarithms/Natural Logarithms SOLVE function Equation calculations

Quadratic and Cubic Equations

Simultaneous Equations Statistical Calculations

Standard Deviation

Regression

Normal Distribution Complex Numbers

Complex Number Calculations

Absolute Value and Argument Calculation

Rectangular Form-Polar Form Display

Conjugate of a Complex Number Differential and Integration Calculations Base n Calculations

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FX 115 MS Training guide

Modes

Before starting a calculation, you must first enter the correct mode.

To perform this type of

calculation:

Basic arithmetic calculations [MODE] [1] COMP

Complex number calculations [MODE] [2] CMPLX

Standard deviation [MODE] [MODE] [1] SD

Regression calculations [MODE] [MODE] [2] REG

Base-n calculations [MODE] [MODE] [3] BASE

Solution of equations [MODE] [MODE] [MODE] [1] EQN

• Pressing the [MODE] key more than three times displays additional setup screens.

• Mode indicators appear in the upper part of the display, except for BASE indicators, which appear in the exponent part of the display.

• The COMP, CMPLX, SD, and REG modes can be used in combination with the angle unit settings.

Initializing th e Calculator

The following options are available for resetting the calculator. [SHIFT] [CLR] [1] [=] (Mcl) Clears memory.

[SHIFT] [CLR] [2] [=] (Mode) Returns the calculation mode and setup to the initial

Calculation mode COMP Angle unit Deg Exponential display format Norm 1, Eng Off

Complex number display a + bi Fraction display format a b/c Decimal point character Dot

[SHIFT] [CLR] [3] [=] (All) Resets to initial defaults and clears memory.

Perform this key operation:

defaults.

To enter this mode:

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FX 115 MS Training guide

Basic Arithmetic Calculations

Making Corrections During Input

• Use the left and right arrows on the REPLAY function to move the cursor to the location you want to correct.

• Press [DEL] to delete at the current cursor position

• Press [SHIFT] [INS] to change the cursor to an insert cursor [ ].

• If an error is made in a calculation, “Syntax Error” will display. Press or .

This will position the cursor at the location of the error.

Replay Function

Every time you perform a calculation, the replay function stores the calculation formula and its result in replay memory. Pressing the up arrow displays the formula and result of the calculation you last performed. If you continue to press the up arrow, you will scroll sequentially through your last calculations (most recent to oldest).

Notes:

• Replay memory capacity is 128 bytes.

• Pressing AC will not clear the replay memory.

• If you want to clear the replay memory, press the ON key or reset the

modes/settings: Press [SHIFT] [CLR] [2] [=] or [SHIFT] [CLR] [3] [=].

• Replay memory is also cleared when you change from one calculation mode to

another or when you turn off the calculator.

Replay Copy

Replay copy lets you recall multiple expressions from replay so they are connected as a multi-statement on the screen and are joined by a colon (:). Use the up and down arrows on the replay button to display the desired expression. Press [SHIFT] [COPY]. The expressions in replay memory starting from the currently displayed expression and continuing to the last expression are copied. Press [=] for the result of each expression.

Order of Operations

The calculator uses “order of operations”. Examples: 2 + 3 x 4 = 14 You do not need parentheses around 3 x 4. (2 + 3) x 4 = 20 Use Replay and [SHIFT] [INS] to add parentheses. Blinking [ ] is the insert cursor.

- 2

(- 2)

= - 4

= 4

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Display Format

To change the display format, press the [MODE] key 5 times (until Fix, Sci, Norm is displayed).

Fixed number of decimal places: Press 1: FIX

Scientific Notation: Press 2: SCI

Normal Notation: Press 3: NORM

Fraction Display

You can use the display set up screen to specify the display format when a fraction calculation result is greater than one. To set the fraction display, press the [MODE] key 6 times and press “1” for Display (DISP). Press the right arrow one time. Select (1) for “a b/c” and (2) for “d/c”.

Mixed Fraction: Press 1: a b/c

Improper Fraction: Press 2: d/c

Decimal-Fraction Conversion

Examples: Keystrokes Display Enter [2.75] [=] 2.75

Press [a b/c] 2 3 4 [SHIFT] [d/c] 11 4

Angle Display

To set the angle unit at degrees, radians, or grads, press the [MODE] key 4 times. Degrees Press 1 Radians Press 2 Grads Press 3

You will then be prompted for the number of decimal places (0 – 9).

You will then be prompted for the number of significant digits (0 – 9).

You will then be prompted for NORM 1 or NORM 2. NORM 1 uses exponential notation for integers with

more than 10 digits and decimal values with more than 2 decimal places. Ex/ 1 ÷ 1000 = 1 x 10

NORM 2 uses exponential notation for integers with more than 10 digits and decimal values with more than 9 decimal places. Ex/ 1 ÷ 1000 = .001

Example

3 2

-3

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Percentage Calculations

Examples: To find percentage of

a number. 12% of 15 [15] [x] [12] [SHIFT] [%] 1.8

To calculate percentage of one number to another. What percentage of 80 is 40? [40] [

To add a percentage. 15% to 1000 [1000] [x] [15] [SHIFT] [%] [+] 1150

To discount a percentage. 85 by 10% [85] [x] [10] [SHIFT] [%] [ -] 76.5

% change, when a value is increased. From 30 to 36 [36] [–] [30] [SHIFT] [%] 20

Percent of increase, when an amount is added. 300cc added to 500 cc [300] [+] [500] [SHIFT] [%] 160

Degrees/Minutes/Seconds

You can perform calculations using degrees, minutes, and seconds, and convert between sexagesimal and decimal values.

Examples: Keystrokes Display [2.5] [=] 2.5

,,,o

Press [ [10] [

Engineering Notation

[ENG] Engineering notation mode that normalizes the displayed value so its [SHIFT] [ENG] Engineering notation mode that normalizes the displayed value so its

] 2° 30° 0

,,,o ,,,o ,,,o

] [15] [ ] [12] [ ] [x] [4] [=] 41° 0° 48°

exponent is a positive multiple of three. exponent is a negative multiple of three.

Keystrokes Display

] [80] [SHIFT] [%] 50

References the Casio FX-115 MS User’s Guide Casio FX-115MS Scientific calculator

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