For the function f(x)=e−1/x2f(x) = e^{-1/x^2}f(x)=e−1/x2 for x≠0x \neq 0x=0 and f(0)=kf(0) = kf(0)=k, what value of kkk makes fff continuous at x=0x=0x=0?
0
1
e
Does not exist