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QalculateSoftware introduction
Qalculate! is a multi-purpose cross-platform desktop calculator. It's simple to use, yet offers power and versatility usually reserved for complex math packages, as well as useful tools for everyday needs (such as currency conversion and percentage calculations). Features include a large library of customizable functions, unit calculations and conversions, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and user-friendly interfaces (GTK and CLI).
QalculateSoftware features
Calculation and analysis:
Basic operations and operators: + – * / mod ^ E() && || ! < > >= <= != ~ & | << >>XOR
Fault-tolerant parsing of strings: log 5 / 2 .5 (3) + (2( 3 +5 = ln(5) / (2.5 * 3) + 2 * (3 + 5))
Expressions can contain any combination of numbers, functions, units, variables, vectors and matrices, and dates
Supports complex numbers and infinite numbers
The spread of uncertainty
Interval arithmetic (used to determine the number of significant digits or directly calculate using numerical intervals)
Supports all common number bases, as well as negative and non-integer bases, sexagesimal numbers, time formats and Roman numerals
Ability to disable functions, variables, units or unknown variables to reduce confusion: for example when you don't want (a+b)^2 to mean (are+barn)^2 but ("a"+"b")^2
Controlled Implicit Multiplication
Matrices and vectors, and related operations (determinants, etc.)
Detailed error message
Arbitrary precision
RPN mode
The results show:
Supports all common number bases, as well as negative and non-integer bases, sexagesimal numbers, time formats and Roman numerals
Many customization options: precision, maximum/minimum decimal places, plural forms, multiplication signs, and more.
Exact or approximate: sqrt(32) returns 4 * sqrt(2) or 5.66
Simple fractions and mixed numbers: 4 / 6 * 2 = 1.333… = 4/3 = 1 + 1/3
Symbolic calculations:
For example. (x + y)^2 = x^2 + 2xy + y^2; 4 "apples" + 3 "oranges"
Break down and simplify
Differentiation and integration
Can solve most equations and inequalities
Customizable assumptions give different results (e.g. ln(2x) = ln(2) + ln(x) if x is assumed to be positive)
Function:
Hundreds of flexible functions: trigonometric, exponential and logarithmic, combinatorics, geometry, calculus, statistics, finance, time and dates, and more.
Easily create, edit and save to standard XML files
Unit:
Supports all SI units and prefixes (including binary), as well as imperial and other unit systems
Automatic conversion: ft + yd + m = 2.2192 m
Explicit conversion: 5 m/s to mi/h = 11.18 mph
Intelligent conversion: automatically convert 5 kg*m/s^2 to 5 N
Convert currencies by retrieving daily exchange rates
Different name forms: abbreviation, singular, plural (meter, meter, meter)
Easily create, edit and save to standard XML files
Variables and constants:
Basic constants: pi, e, etc.
Many physical constants (with or without units) and properties of chemical elements
CSV file import and export
Easily create, edit and save to standard XML files
Flexible – can contain simple numbers, units or complete expressions
A dataset with database-like structures of objects and associated properties
Drawing:
Using Gnuplot
Can plot functions or data (matrices and vectors)
Ability to save drawings as PNG images, postscript, etc.
Several customization options
Qalculate update log
1. Optimized some functions
2. Solved many unbearable bugs
Huajun editor recommends:
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