1.

If \[x={{e}^{y+{{e}^{y+....t\text{o}\,\,\infty }}}}\], \[x>0,\] then \[\frac{dy}{dx}\] is         [AIEEE 2004]

A.            \[\frac{1+x}{x}\]
B.            \[\frac{1}{x}\]
C.                 \[\frac{1-x}{x}\]
D.                 \[\frac{x}{1+x}\]
Answer» D.                 \[\frac{x}{1+x}\]


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