问题
填空题
若函数f(x)=1+c81x+c82x2+…+c88x8(x∈R),则log2f(3)=______.
答案
f(x)=1+c81x+c82x2+…+c88x8=C08+c81x+c82x2+…+c88x8=(1+x)8
log2f(3)=log248=16
故答案为16
若函数f(x)=1+c81x+c82x2+…+c88x8(x∈R),则log2f(3)=______.
f(x)=1+c81x+c82x2+…+c88x8=C08+c81x+c82x2+…+c88x8=(1+x)8
log2f(3)=log248=16
故答案为16