1)f(x) = 3x²-2x³+1
f'(x) = 6x-6x²
6x - 6x² = 0
6x(1-x) = 0
x1 = 0
x2 = 1
2)f(-1) = 3+2+1 = 6, max
f(0) = 1
f(1) = 3-2+1 = 2
f(4) = 3•16-2•64+1 = 16(3-8)+1 = -16•5+1 = -80+1 = -79, min
