Let's say I have an X number and I want to increment it by 50%, I would get
Then in order to multiply Y and get X again I would need to do
How do you call the relation between A and Z?
Example with numbers:
$$5*1.5=7.5$$ $$7.5*Z=5$$ $$Z=0.66$$
How do you call the relation between 1.5 and 0.66 when $X*1.5*0.66=X$?