What is Find Math function in Salesforce?

Hi,
FUNCTION DESCRIPTION
ABS: Calculates the absolute value of a number. The absolute value of a number is the number without its positive or negative sign.
CEILING:Rounds a number up to the nearest integer, away from zero if negative.
DISTANCE Calculates the distance between two locations in miles or kilometers.
EXP Returns a value for e raised to the power of a number you specify.
FLOOR Returns a number rounded down to the nearest integer, towards zero if negative.
GEOLOCATION Returns a geolocation based on the provided latitude and longitude. Must be used with the DISTANCE function.
LN Returns the natural logarithm of a specified number. Natural logarithms are based on the constant e value of 2.71828182845904.
LOG Returns the base 10 logarithm of a number.
MAX Returns the highest number from a list of numbers.
MCEILING Rounds a number up to the nearest integer, towards zero if negative.
MFLOOR Rounds a number down to the nearest integer, away from zero if negative.
MIN Returns the lowest number from a list of numbers.
MOD Returns a remainder after a number is divided by a specified divisor.
ROUND Returns the nearest number to a number you specify, constraining the new number by a specified number of digits.
SQRT Returns the positive square root of a given number.