Find f′(x)f'(x)f′(x) for f(x)=4x3+3x4f(x) = 4x^3 + 3x^4f(x)=4x3+3x4.
12x2+12x312x^2 + 12x^312x2+12x3
12x2+4x312x^2 + 4x^312x2+4x3
4x2+3x34x^2 + 3x^34x2+3x3
12x+12x212x + 12x^212x+12x2