1.

यदि (If) `x=logt+sint,y=e^(t)+cost`. Find `(dy)/(dx)` निकालें ।

Answer» `x=logt+sint therefore(dx)/(dt)=(1)/(t)+cost` … (1)
तथा `y=e^(t)+cost therefore(dy)/(dt)=e^(t)-sint`
अब ,`(dy)/(dx)=(dy//dt)/(dx//dt)=(e^(t)-sint)/((1)/(t)+cott)=(t(e^(t)-sint))/(1+t cost)`


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