Differentiate the following functions:

(i)

(ii)

(iii)

(i) =

Formula:-

= n

Differentiating w.r.t x,

= -1

= -

(ii) =

Formula:-

= n

Differentiating w.r.t x,

=

=

(iii) =

Formula:-

= n

Differentiating w.r.t x,

=

=