If

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.


=


= {by using divide rule, }


=


=


=


=


= ……..(1)



= {by using divide rule, }


=


=


=


=


= ……..(1)


Dividing (1) and (2), we get


=


=


1