11. New Mathematical Functions

The mathematical functions 'log', 'ln', 'Exponent', 'Power', 'Round' are added in v8.5 for math calculation.

The result of the functions is about to return value in numerical field

log--returns logarithm

ln--returns denary logarithm 

Exponent--returns exponent with scientific notation

Power--returns the number which is appointed the power

Round--returns the number which is appointed the round