Réitigh ∫ (from 0 to 1) of (2x+2-1-2x^2-2x^2+x) wrt x

$$\int_{ 0 }^{ 1 } (2x+2-1-2 { x }^{ 2 } -2 { x }^{ 2 } +x) d x$$

Luacháil

$$\frac{7}{6}\approx 1.166666667$$

Céimeanna Réitigh

Déan luacháil ar an suimeálaí éiginnte ar dtús.

$$\int 2x+2-1-2x^{2}-2x^{2}+x\mathrm{d}x$$

Measc an tsuim téarma fá téarma.

$$\int 2x\mathrm{d}x+\int 2\mathrm{d}x+\int -1\mathrm{d}x+\int -2x^{2}\mathrm{d}x+\int -2x^{2}\mathrm{d}x+\int x\mathrm{d}x$$

Fág an leanúnach sna téarmaí as an áireamh.

$$2\int x\mathrm{d}x+\int 2\mathrm{d}x+\int -1\mathrm{d}x-2\int x^{2}\mathrm{d}x-2\int x^{2}\mathrm{d}x+\int x\mathrm{d}x$$

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

$$x^{2}+\int 2\mathrm{d}x+\int -1\mathrm{d}x-2\int x^{2}\mathrm{d}x-2\int x^{2}\mathrm{d}x+\int x\mathrm{d}x$$

Aimsigh suimeálaithe do 2 ag baint úsáid as an tábla do suimeálaithe coitianta riail\int a\mathrm{d}x=ax.

$$x^{2}+2x+\int -1\mathrm{d}x-2\int x^{2}\mathrm{d}x-2\int x^{2}\mathrm{d}x+\int x\mathrm{d}x$$

Aimsigh suimeálaithe do -1 ag baint úsáid as an tábla do suimeálaithe coitianta riail\int a\mathrm{d}x=ax.

$$x^{2}+2x-x-2\int x^{2}\mathrm{d}x-2\int x^{2}\mathrm{d}x+\int x\mathrm{d}x$$

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 -2 faoi \frac{x^{3}}{3}.

$$x^{2}+2x-x-\frac{2x^{3}}{3}-2\int x^{2}\mathrm{d}x+\int x\mathrm{d}x$$

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 -2 faoi \frac{x^{3}}{3}.

$$x^{2}+2x-x-\frac{2x^{3}}{3}-\frac{2x^{3}}{3}+\int x\mathrm{d}x$$

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

$$x^{2}+2x-x-\frac{2x^{3}}{3}-\frac{2x^{3}}{3}+\frac{x^{2}}{2}$$

Simpligh.

$$\frac{3x^{2}}{2}+x-\frac{4x^{3}}{3}$$

Is ionann suimeálaí cinnte agus frithdhíorthach an nath luacháilte ag teorainn uachtair na suimeála lúide an frithdhíorthach luacháilte ag teorainn íochtair na suimeála.

$$\frac{3}{2}\times 1^{2}+1-\frac{4}{3}\times 1^{3}-\left(\frac{3}{2}\times 0^{2}+0-\frac{4}{3}\times 0^{3}\right)$$

Simpligh.

$$\frac{7}{6}$$