求下列极限lim _(xarrow {0)^+}((1+dfrac {1)(x))}^x

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1.求下列极限.-|||-(4) lim _(xarrow +infty )dfrac (ln (1+dfrac {1)(x))}(dfrac {pi )(2)

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求极限lim _(xarrow {0)^+}((dfrac {1)(x))}^tan x=求极限