$\"\"$

\

(a).

\

The function is $\"\"$ .

\

Definition of hyperbolic trigonometry : $\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

(b).

\

The function is $\"\"$ .

\

Definition of hyperbolic trigonometry : $\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

(c).

\

The function is $\"\"$ .

\

The definition of hyperbolic trigonometry : $\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

(d).

\

The function is $\"\"$ .

\

The definition of hyperbolic trigonometry : $\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

(e).

\

The function is $\"\"$ .

\

The definition of hyperbolic trigonometry : $\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

(f).

\

The function is $\"\"$ .

\

Definition of hyperbolic trigonometry : $\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

(g).

\

The function is $\"\"$ .

\

Definition of hyperbolic trigonometry : $\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ .

\

(h).

\

The function is $\"\"$ .

\

Definition of hyperbolic trigonometry : $\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

(i).

\

The function is $\"\"$ .

\

The definition of hyperbolic trigonometry : $\"\"$ .

\

$\"\"$ .

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

(a). $\"\"$ .

\

(b). $\"\"$ .

\

(c). $\"\"$ .

\

(d). $\"\"$ .

\

(e). $\"\"$ .

\

(f). $\"\"$ .

\

(g). $\"\"$ .

\

(h). $\"\"$ .

\

(i). $\"\"$ .