fx-115ES PLUS
fx-991ES PLUS C
(2nd edition / NATURAL-V.P.A.M.)
Before Using the Calculator
Calculation Modes and Calculator Setup
Inputting Expressions and Values
- ▶Basic Input Rules
- ▶Inputting with Natural Display
- ▶√ Form Calculation Range
- ▶Using Values and Expressions as Arguments (Natural Display only)
- ▶Overwrite Input Mode (Linear Display only)
- ▶Correcting and Clearing an Expression
Basic Calculations
- ▶Toggling Calculation Results
- ▶Fraction Calculations
- ▶Percent Calculations
- ▶Degree, Minute, Second (Sexagesimal) Calculations
- ▶Multi-Statements
- ▶Using Engineering Notation
- ▶Remainder Calculations
- ▶Recurring Decimal Calculations
- ▶Prime Factorization
- ▶Calculation History and Replay
- ▶Using Memory Functions
Function Calculations
- ▶Pi (π), Natural Logarithm Base e
- ▶Trigonometric Functions
- ▶Hyperbolic Functions
- ▶Angle Unit Conversion
- ▶Exponential Functions
- ▶Logarithmic Functions
- ▶Power Functions and Power Root Functions
- ▶Integration Calculations
- ▶Differential Calculations
- ▶Σ Calculations
- ▶Π Calculations
- ▶Rectangular-Polar Coordinate Conversion
- ▶Factorial Function (!)
- ▶Absolute Value Function (Abs)
- ▶Random Number (Ran#)
- ▶Random Integer (RanInt#)
- ▶Permutation (nPr) and Combination (nCr)
- ▶Rounding Function (Rnd)
- ▶Greatest Common Divisor (GCD) and Least Common Multiple (LCM)
- ▶Integer Part of a Value (Int) and Largest Integer that does not Exceed a Value (Intg)
- ▶Using CALC
- ▶Using SOLVE
- ▶Scientific Constants
- ▶Metric Conversion
Using Calculation Modes
- ▶Complex Number Calculations (CMPLX)
- ▶Statistical Calculations (STAT)
- ▶Base-n Calculations (BASE-N)
- ▶Equation Calculations (EQN)
- ▶Matrix Calculations (MATRIX)
- ▶Creating a Numerical Table from Two Functions (TABLE)
- ▶Vector Calculations (VECTOR)
- ▶Inequality Calculations (INEQ)
- ▶Using VERIFY (VERIF)
- ▶Distribution Calculations (DIST)
Technical Information
- ▶Errors
- ▶Before Assuming Malfunction of the Calculator...
- ▶Replacing the Battery
- ▶Calculation Priority Sequence
- ▶Calculation Ranges, Number of Digits, and Precision
- ▶Specifications
- ▶Verifying the Authenticity of Your Calculator
Frequently Asked Questions
Metric Conversion
The calculator's built-in metric conversion commands make it simple to convert values from one unit to another. You can use the metric conversion commands in any calculation mode except for BASE-N and TABLE.
To input a metric conversion command into a calculation, press (CONV) and then input the two-digit number that corresponds to the command you want.
Example 1: To convert 5 cm into inches (LineIO)
- 5(CONV)
- (cmin)
Example 2: To convert 100 g into ounces (LineIO)
- 100(CONV)(goz)
Example 3: To convert -31°C into Fahrenheit (LineIO)
- 31(CONV)(°C°F)
The following shows the two-digit numbers for each of the metric conversion commands.
01: incm | 02: cmin | 03: ftm | 04: mft |
05: ydm | 06: myd | 07: milekm | 08: kmmile |
09: n milem | 10: mn mile | 11: acrem2 | 12: m2acre |
13: gal (US)ℓ | 14: ℓgal (US) | 15: gal (UK)ℓ | 16: ℓgal (UK) |
17: pckm | 18: kmpc | 19: km/hm/s | 20: m/skm/h |
21: ozg | 22: goz | 23: lbkg | 24: kglb |
25: atmPa | 26: Paatm | 27: mmHgPa | 28: PammHg |
29: hpkW | 30: kWhp | 31: kgf/cm2Pa | 32: Pakgf/cm2 |
33: kgf • mJ | 34: Jkgf • m | 35: lbf/in2kPa | 36: kPalbf/in2 |
37: °F°C | 38: °C°F | 39: Jcal | 40: calJ |
Conversion formula data is based on the "NIST Special Publication 811 (2008)".
Note
The Jcal command performs conversion for values at a temperature of 15°C.