Calculator Arity

Everyone
124
Arity Calculator was written by Mihai Preda, and is open source. It uses the "Arity" arithmetic library.

Адаптировано для Android 4.x by Naik. Special mod for KI-14-1 :) Enjoy!

Sample expressions

simple expression: 1+2
variable evaluation: pi
function evaluation: sin(0)
variable definition: a=3.5
function definition: f(x)=x^2-1
parentheses: (1-x)^2
To enter an expression cointaining letters, such as sin(x), use the ⇳ key on the basic keypad. It toggles opened/closed the letter keypad.
Predefined functions

Logarithms and power

sqrt(x): square root; x^0.5
cbrt(x): cube root; x^(1/3)
exp(x): exponential; e^x
log(x), ln(x): natural logarithm
log2(x), lb(x): binary logarithm
log10(x), lg(x): decimal logarithm
log(base,x): arbitrary base logarithm

sin(x), cos(x), tan(x)
asin(x), acos(x), atan(x)
Trigonometric - degrees

sind(x), cosd(x), tand(x)
asind(x), acosd(x), atand(x)
Hyperbolic

sinh(x), cosh(x), tanh(x)
asinh(x), acosh(x), atanh(x)
Other

gcd(x,y): greatest common divisor
comb(n,k): combinations
perm(n,k): permutations
min(x,y), max(x,y)
floor(x), ceil(x)
abs(x): absolute value
sign(x): signum
rnd(): random value from [0,1). rnd(max): random value from [0, max).
gamma(x): (x-1)!
mod(x,y): modulo
Complex numbers

i or j is the complex base. Example:
i*i
(1+i)^2
e^(i*pi)
Operators

+ - × ÷ basic arithmetic
^ power
% percent
! factorial
# modulo
√ square root
' first derivative
Tips

Parentheses: you may omit the leading or final parentheses, e.g. 1+2)(3+4 is valid.
Multiplication: you may omit the multiplication operator when unambiguous, e.g. 3π+2(1+2)
Expression continuation: starting a new expression with an operator auto-inserts ans, the result of the last expression.
Clear: use the Enter key to quickly erase the whole input line.
Scientific e notation: 1e3 is 1000.
Use trackball Up/Down to navigate the history.
Derivative

It is possible to compute the first derivative of a function with one argument using the prime notation: log'(5).
The prime mark (quote) must appear immediately after the name of the function, and must be followed by open-parentheses.

The derivative may be plotted e.g. sqrt'(x).

To compute the derivative of an expression you must define the expression as a named function: E.g. f(x)=x^3+x^2+1, followed by f'(x).

Multi plot

To plot multiple functions on the same 2d graph, simply enter them on the same line separated by ";". E.g. x;x^2;2

You can enter values in binary, octal or hexadecimal by prefixing them with 0b, 0o or 0x respectivelly, such as:
binary: 0b1010
octal: 0o17
hex: 0x100

Review Policy
4.3
124 total
5
4
3
2
1

What's New

1.44
- Added dark theme (in settings)

1.43
- Fixed 3D-graphics

1.421
- Hotfix '0' button

1.42
- Light theme, other improvements

1.41
- Use appcompat-v7
- Fixed error on android < 5

1.4
- Increased font size on keyboard
- Improved user interface

Updated
October 29, 2015
Size
1.4M
Installs
5,000+
Current Version
1.44
Requires Android
2.3.3 and up
Content Rating
Everyone
Permissions
Offered By
Nick Software
Developer
Ukraine, Poltavska oblast