You are only interested in the term in square brackets for thisOriginally Posted by KAF33
substitution. If the term in question in the first equation is:
you want to show that it is equal to:
after the substitution .
The first problem here is that in the first of these expressions you have an
and in the second you have an , so unless this is a typo we cannot
If it is a typo you are right you cannot get the second expression from the
first by this substitution (unless there is another typo somewhere).