Then
,
. (Answer.)
The working out of quotients is often tedious, but there is nothing difficult about it.
Some further examples fully worked out are given hereafter.
(1) Differentiate .
Being a constant, vanishes, and we have
.
But ; so we get:
.
(2) Differentiate .
Putting in the index form, we get
.
Now
;
or,
.