Written by Calculates the “double factorial” of a given number.
Computes Euler’s number, e (~2.718), raised to a specified power.
Rounds a number up to the nearest even integer.
Calculates the complementary Gaussian error function for a given value.
Transforms an angle expressed in radians into degrees.
Calculates the number of distinct values within a defined set of values and ranges.
Counts the number of entries in a range based on several specified criteria.
Calculates the hyperbolic cotangent of any real number.
Calculates the hyperbolic cosine for any real numerical input.
Determines the number of ways to select a specified number of items from a collection, allowing repetitions of the same item.