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)
(cm
in)
Example 2: To convert 100 g into ounces (LineIO)
100
(CONV)
(g
oz)
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: in![]() |
02: cm![]() |
03: ft![]() |
04: m![]() |
05: yd![]() |
06: m![]() |
07: mile![]() |
08: km![]() |
09: n mile![]() |
10: m![]() |
11: acre![]() |
12: m2![]() |
13: gal (US)![]() |
14: ℓ![]() |
15: gal (UK)![]() |
16: ℓ![]() |
17: pc![]() |
18: km![]() |
19: km/h![]() |
20: m/s![]() |
21: oz![]() |
22: g![]() |
23: lb![]() |
24: kg![]() |
25: atm![]() |
26: Pa![]() |
27: mmHg![]() |
28: Pa![]() |
29: hp![]() |
30: kW![]() |
31: kgf/cm2![]() |
32: Pa![]() |
33: kgf • m![]() |
34: J![]() |
35: lbf/in2![]() |
36: kPa![]() |
37: °F![]() |
38: °C![]() |
39: J![]() |
40: cal![]() |
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.