问题
填空题
若函数f(x)=C80x0+C81x1+C82x2+…+C88x8(x∈R),则log2f(3)=______.
答案
∵函数f(x)=C80x0+C81x1+C82x2+…+C88x8(x∈R),
∴f(x)=(x+1)8,
则log2f(3)=log2(3+1)8=log2(4)8=16
故答案为:16
若函数f(x)=C80x0+C81x1+C82x2+…+C88x8(x∈R),则log2f(3)=______.
∵函数f(x)=C80x0+C81x1+C82x2+…+C88x8(x∈R),
∴f(x)=(x+1)8,
则log2f(3)=log2(3+1)8=log2(4)8=16
故答案为:16