f(x)是奇函数,f(1)=1/2 f(x+2)=-f(x) f(7)=
问题描述:
f(x)是奇函数,f(1)=1/2 f(x+2)=-f(x) f(7)=
答
f(x 4)=-f(x 2)=f(x).所以f(x)周期为4,f(7)=f(-1)=-f(1)=-1/2
f(x)是奇函数,f(1)=1/2 f(x+2)=-f(x) f(7)=
f(x 4)=-f(x 2)=f(x).所以f(x)周期为4,f(7)=f(-1)=-f(1)=-1/2