I wil appretiate any suggestion of how to demostrate
this equation:
if
then
I could investigate for myself some features and
found some interesting expressions, I list them below:
................(1).
.........(2).
....(3).
a mean they are all equal (1)=(2)=(3).
and if then
(4)...... .........see exppretion 2.
(5)...... .........It is well known that .
I hope these ecuations above help.
I have to say thank for the reasonable answer, but would you mind to write me back with any references about this topic(like book titles),
I asking you this becouse I'd like to know the way you easily find out the solution.