If f(x)=x3−6x2+9x+5f(x) = x^3 - 6x^2 + 9x + 5f(x)=x3−6x2+9x+5, at what xxx is there a local maximum?
x=1x = 1x=1
x=3x = 3x=3
x=0x = 0x=0
x=2x = 2x=2