k=-1/4详由题得f(-x)=f(x)log4(4的-x次方+1)-2kx=log4(4的x次方+1)+2kx ①{log4(4的-x次方+1)=log4(（4的x次方+1）/（4的x次方）)=log4(4的x次方+1)-log4(4的x次方)=log4(4的x次方+1)-x}(草稿纸上计算)（分子分母...