If f(x)=x2sin(1/x)f(x) = x^2 \sin(1/x)f(x)=x2sin(1/x) for x≠0x \neq 0x=0 and f(0)=0f(0)=0f(0)=0, what is f′(0)f'(0)f′(0)?
000
111
−1-1−1
Does not exist