Question

calcule a derivada terceira de f(x) = 3.x³

Answer 1

dy/dx=9x²

d²y/dx²=18x

[d³y/dx³=18]

Answer 2

$\boxed{\begin{array}{l}\sf f(x)=3x^3\\\sf f'(x)=3x^2\\\sf f''(x)=6x\\\sf f'''(x)=6\end{array}}$