Найти вторую производную. Created by ybrfcegth. matematika-ru

Найти вторую производную...

$y=\frac{x^2}{x+2}\\\\y'=\frac{2x(x+2)-x^2\cdot 1}{(x+2)^2}=\frac{x^2+4x}{(x+2)^2}=\frac{x(x+4)}{(x+2)^2}\\\\y''=\frac{(2x+4)(x+2)^2-(x^2+4x)\cdot 2(x+2)}{(x+2)^4}=\frac{(x+2)\cdot (\, (2x+4)(x+2)-2\cdot (x^2+4x)\, )}{(x+2)^4}=\\\\=\frac{2x^2+4x+4x+8-2x^2-8x}{(x+2)^3}=\frac{8}{(x+2)^3}$

0 votes Thanks 1

NNNLLL54

Verified answer

y' = (2x(x+2) - x^2)/(x+2)^2 = (2x^2 + 4x - x^2)/(x+2)^2 = (x^2 +4x)/(x+2)^2;

y'' = ((2x + 4)(x^2 + 4x + 4) - (x^2 + 4x)(2x + 4))/(x+2)^4 = (2x + 4)(x^2 + 4x + 4 - x^2 - 4x)/(x+2)^4 = 8(x+2)/(x+2)^4 = 8/(x+2)^3.

0 votes Thanks 1

Answers & Comments

Verified answer

primer nomer 12 zaranee spasibo

zadanie nomer 1 zaranee spasibo

chto obshego i chem otlichayutsya kolebatelnoe i vrashatelnoe dvizhenie

mozhet li byt stal bez primesej pochemu

napishite priklyuchencheskij rasskaz na anglijskom yazyke

sostavit pyat tipov voprosov she spent her holidays at the seasidee0c277b00b358c6bcebe478908194fe0 30863

osobennostisvojstva i sushnost paroobrazovaniya

najti pervuyu i vtoruyu proizvodnuyu

sostavit odno predlozhenie

nachertit vid sleva mozhno primerno

рекомендуемые вопросы

Helpful Links

Helpful Social