e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x)证明上式,或者说明怎么到这个等式关系,e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x),

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e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x)证明上式,或者说明怎么到这个等式关系,e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x),

e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x)证明上式,或者说明怎么到这个等式关系,e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x),
e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x)
证明上式,或者说明怎么到这个等式关系,e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x),

e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x)证明上式,或者说明怎么到这个等式关系,e^x=1+x+(x^2)/2!+(x^3)/3!+(x^4)/4!+...(for all x),
这是函数的幂级数展开式.学过就知道的