设函数f(x)=x(ex+ae-x)(xR)是偶函数,则实数a=_______▲_________

设函数f(x)=x(ex+ae-x)(xR)是偶函数,则实数a=________________

答案

考查函数的奇偶性的知识。g(x)=ex+ae-x为奇函数,由g(0)=0,得a=1

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