Calculates digit sequence checksum using Luhn algorithm (mod 10), calculates validation digit (the digit to be appended to the digit sequence to make whole sequence ckecksum equal to zero).
Simplifies math equation with single variable (x). In eqation you may also use integer and fractional numerical constants arithmetic operations, trigonometric and hyperbolic functions.
Math equation samples.
This online calculator supports simple mathematical operations, addition/subtraction/multiplication/division, on degrees
Random worksheets, which are generated automatically from user parameters.
Mathematical calculator is used for evaluation math expressions with arithmetic operations (+-/*^) and functions: sqrt - square root, exp - exponential function, lb - binary logarithm, lg - decimal logarithm, ln - natural logarithm, sin - sine, cos - cosine, tan - tangent, cot - cotangent, sec - secant, csc - cosecant, arcsin - arcsine, arccos - arccosine, arctan - arctangent, arccot - arccotangent, arcsec - arcsecant, arccosec - arccosecant and others
Calculates the molar mass of the substance using atomic mass units from the periodic table
Calculator solving some mathematical competition task
This online calculator determines the rank of a given matrix
About 2012, the end of the world and Maya
This online calculator computes median of a triange given triangle sides
Issue Number Generator for unnumbered magazines & comics & newspapers. If magazine did not print issue numbers, only dates, it can number them all, f.e. all Sundays starting with specified date up to specified date.
This simple calculator convert meters per second to kilometers per hour and vice versa
This calculator finds modular inverse of a matrix using adjugate matrix and modular multiplicative inverse
This calculator calculates modular multiplicative inverse of an given integer a modulo m
Issue Number Generator for unnumbered magazines & comics & newspapers. If magazine did not print issue numbers, only months, it can number them all, f.e. all months starting with specified date up to specified date
Moon's age and phase calculation