Q. 74.3( 3 Votes )

Find , when

𝒳 = (log t + cos t), 𝒴 = (et + sin t)

Answer :

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.


=


= et + cost ………..(1)



= - sint. …………….(2)


Dividing (1) and (2), we get


=


= .


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