lim (1 + 1/x)^x =e ,x→∞ (e≈2.7182818...,无理数)怎么证lim (1 + 1/x)^x=e {x→∞ }

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lim(1+1/x)^x=e,x→∞(e≈2.7182818...,无理数)怎么证lim(1+1/x)^x=e{x→∞}lim(1+1/x)^x=e,x→∞(e≈2.7182818...,无理数)怎么

lim (1 + 1/x)^x =e ,x→∞ (e≈2.7182818...,无理数)怎么证lim (1 + 1/x)^x=e {x→∞ }
lim (1 + 1/x)^x =e ,x→∞ (e≈2.7182818...,无理数)
怎么证lim (1 + 1/x)^x=e {x→∞ }

lim (1 + 1/x)^x =e ,x→∞ (e≈2.7182818...,无理数)怎么证lim (1 + 1/x)^x=e {x→∞ }
证法一:
蔡高厅证法:
(一)证明单调性:
设a>b>0
a^(n+1)-b^(n+1)=(a-b)*[a^n*b^0+a^(n-1)*b^1+a^(n-2)*b^2+a^(n-3)*b^3+.+a^0*b^n]