若函数y=f(x)(x∈R)是偶函数,且f(1)
问题描述:
若函数y=f(x)(x∈R)是偶函数,且f(1)
答
f(1)=f(-1)
f(3)=f(-3)
f(1)
若函数y=f(x)(x∈R)是偶函数,且f(1)
f(1)=f(-1)
f(3)=f(-3)
f(1)