Question

Ache as derivadas 1ª e 2ª de:
$f(x)= x^{5}+2 x^{3}-x$

Answer 1

$\mathrm{f(x) = x^5+2x^3-x}\\\\ \mathrm{\dfrac{dy}{dx}=5x^4+2.3x^2-x^0\ \to\ \dfrac{dy}{dx}=5x^4+6x^2-1}\\\\ \mathrm{\dfrac{d^2y}{dx^2}=5.4x^3+6.2x^1-0\ \to\ \dfrac{d^2y}{dx^2}=20x^3+12x}$