Réitigh ∫ (x^2+2)^3

$$\int ( x ^ { 2 } + 2 ) ^ { 3 }$$

Luacháil

$$\frac{x^{7}}{7}+\frac{6x^{5}}{5}+4x^{3}+8x+С$$

Céimeanna Réitigh

Úsáid an teoirim dhéthéarmach \left(a+b\right)^{3}=a^{3}+3a^{2}b+3ab^{2}+b^{3} chun \left(x^{2}+2\right)^{3} a leathnú.

$$\int \left(x^{2}\right)^{3}+6\left(x^{2}\right)^{2}+12x^{2}+8\mathrm{d}x$$

Chun cumhacht a ardú go cumhacht eile, méadaigh na heaspónaint. Iolraigh 2 agus 3 chun 6 a bhaint amach.

$$\int x^{6}+6\left(x^{2}\right)^{2}+12x^{2}+8\mathrm{d}x$$

Chun cumhacht a ardú go cumhacht eile, méadaigh na heaspónaint. Iolraigh 2 agus 2 chun 4 a bhaint amach.

$$\int x^{6}+6x^{4}+12x^{2}+8\mathrm{d}x$$

Measc an tsuim téarma fá téarma.

$$\int x^{6}\mathrm{d}x+\int 6x^{4}\mathrm{d}x+\int 12x^{2}\mathrm{d}x+\int 8\mathrm{d}x$$

Fág an leanúnach sna téarmaí as an áireamh.

$$\int x^{6}\mathrm{d}x+6\int x^{4}\mathrm{d}x+12\int x^{2}\mathrm{d}x+\int 8\mathrm{d}x$$

Ó \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} fá choinne k\neq -1, athchuir \int x^{6}\mathrm{d}x le \frac{x^{7}}{7}.

$$\frac{x^{7}}{7}+6\int x^{4}\mathrm{d}x+12\int x^{2}\mathrm{d}x+\int 8\mathrm{d}x$$

Ó \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} fá choinne k\neq -1, athchuir \int x^{4}\mathrm{d}x le \frac{x^{5}}{5}. Méadaigh 6 faoi \frac{x^{5}}{5}.

$$\frac{x^{7}}{7}+\frac{6x^{5}}{5}+12\int x^{2}\mathrm{d}x+\int 8\mathrm{d}x$$

Ó \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} fá choinne k\neq -1, athchuir \int x^{2}\mathrm{d}x le \frac{x^{3}}{3}. Méadaigh 12 faoi \frac{x^{3}}{3}.

$$\frac{x^{7}}{7}+\frac{6x^{5}}{5}+4x^{3}+\int 8\mathrm{d}x$$

Aimsigh suimeálaithe do 8 ag baint úsáid as an tábla do suimeálaithe coitianta riail\int a\mathrm{d}x=ax.

$$\frac{x^{7}}{7}+\frac{6x^{5}}{5}+4x^{3}+8x$$

Simpligh.

$$8x+4x^{3}+\frac{6x^{5}}{5}+\frac{x^{7}}{7}$$

Má tá F\left(x\right) mar frithdhíorthach do f\left(x\right), beidh tacar do frithdhíorthach uile do f\left(x\right) a thabhairt ag F\left(x\right)+C. Mar sin de, cur an comhtháthú leanúnach C\in \mathrm{R} don toradh.

$$8x+4x^{3}+\frac{6x^{5}}{5}+\frac{x^{7}}{7}+С$$

Difreálaigh w.r.t. x

$$\left(x^{2}+2\right)^{3}$$