Let f(x)=xnf(x) = x^nf(x)=xn. For what nnn is f′′(x)=f(x)f''(x) = f(x)f′′(x)=f(x)?
No real nnn
n=2n = 2n=2
n=1n = 1n=1
n=0n = 0n=0