Question

设f(x)是在（负无穷,正无穷)上的奇函数,f(x+2)=-f(x),当0≤x≤1时,f(x)=x,则f(47.5)?

Answer 1

f(0.5) = 0.5 => f(-0.5) = -0.5 => f(47.5) = f(-0.5+48) = f(-0.5) = -0.5