Theorem: y and x are given in a different variable that is t . We can find by finding and and then dividing them to get the required thing.

Let us assume u=

=

=

= {by using divide rule, }

Putting value of u

=

= ………..(1)

Let assume v=

= {by using divide rule, }

Putting value of v

=

=

= ……….(2)

Dividing (1) and (2), we get

=

=