(a)

We have,

=

=

=

(b)

We have,

=

=

(c)

We have,

=

=

(d)

We have,

=

=

= 1

(e)

We have,

=

=

=

(f)

We have,

=

=

= 1

(g)

We have,

=

=

=

(h)

We have,

=

=

(i) 3-

We have,

= –

=

=