LOG
Basic Overview
Description  Returns the logarithm of a number (first argument) with respect to a base (second argument), while retaining all dimensions. 
Syntax  LOG(Node1, Node2) 
Parameter 

Example
Input A =
Year  Value 

2019  2 
2020  3 
2021  4.5 
Input Base =
Year  Value 

2019  2 
2020  2 
2021  2 
Output LOG('A', 'Base') =
Year  Value 

2019  1 
2020  1.58 
2021  2.17 