∵f(x)(x∈R)为奇函数∴f(-x)=-f(x)
∴f-1(-x)=-f-1(x)
∴F(?x)=
2f(?x)?2f?1(?x)
2f(?x)+2f?1(?x)
=
2?f(x)?2?f?1(x)
2?f(x)+2?f?1(x)
=
?1 2f(x)
1 2f?1(x)
+1 2f(x)
1 2f?1(x)
=?
=-F(x)
2f(x)?2f?1(x)
2f(x)+2f?1(x)
∴F(x)是奇函数.
故选A.