Question

$y=x^{20} ; \frac{d^2y}{dx^2}= ?

• A. x¹⁸
• B. 38x¹⁸
• C. 380x¹⁸
• D. 360x¹⁸

Answer 1

Answer:

C. 380x¹⁸

$y=x^{20}$

$\frac{dy}{dx}= 20x^{19}$

$\frac{d^2y}{dx^2}=20 \times 19 x^{18} = 380x^{18}$