Rešite ∫ (from 2 to 7) of (4112x-(2(x-2))(-x-2/2))(7/23)

$$\int _ { 2 } ^ { 7 } ( 4112 x - ( 2 ( x - 2 ) ) ( - \frac { x - 2 } { 2 } ) ) ( \frac { 7 } { 23 } )$$

Ovrednoti

$$\frac{1943795}{69}\approx 28170,942028986$$

Koraki rešitve

Okrajšaj 2 in 2.

$$\int _{2}^{7}\left(4112x-\left(-\left(x-2\right)\left(x-2\right)\right)\right)\times \frac{7}{23}\mathrm{d}x$$

Uporabite distributivnost, da pomnožite -\left(x-2\right) s/z x-2.

$$\int _{2}^{7}\left(4112x-\left(-\left(x-2\right)x+2x-4\right)\right)\times \frac{7}{23}\mathrm{d}x$$

Uporabite distributivnost, da pomnožite -1 s/z x-2.

$$\int _{2}^{7}\left(4112x-\left(\left(-x+2\right)x+2x-4\right)\right)\times \frac{7}{23}\mathrm{d}x$$

Uporabite distributivnost, da pomnožite -x+2 s/z x.

$$\int _{2}^{7}\left(4112x-\left(-x^{2}+2x+2x-4\right)\right)\times \frac{7}{23}\mathrm{d}x$$

Združite 2x in 2x, da dobite 4x.

$$\int _{2}^{7}\left(4112x-\left(-x^{2}+4x-4\right)\right)\times \frac{7}{23}\mathrm{d}x$$

Če želite poiskati nasprotno vrednost za -x^{2}+4x-4, poiščite nasprotno vrednost vsakega izraza.

$$\int _{2}^{7}\left(4112x-\left(-x^{2}\right)-4x-\left(-4\right)\right)\times \frac{7}{23}\mathrm{d}x$$

Nasprotna vrednost -x^{2} je x^{2}.

$$\int _{2}^{7}\left(4112x+x^{2}-4x-\left(-4\right)\right)\times \frac{7}{23}\mathrm{d}x$$

Nasprotna vrednost -4 je 4.

$$\int _{2}^{7}\left(4112x+x^{2}-4x+4\right)\times \frac{7}{23}\mathrm{d}x$$

Združite 4112x in -4x, da dobite 4108x.

$$\int _{2}^{7}\left(4108x+x^{2}+4\right)\times \frac{7}{23}\mathrm{d}x$$

Uporabite distributivnost, da pomnožite 4108x+x^{2}+4 s/z \frac{7}{23}.

$$\int _{2}^{7}4108x\times \frac{7}{23}+x^{2}\times \frac{7}{23}+4\times \frac{7}{23}\mathrm{d}x$$

Izrazite 4108\times \frac{7}{23} kot enojni ulomek.

$$\int _{2}^{7}\frac{4108\times 7}{23}x+x^{2}\times \frac{7}{23}+4\times \frac{7}{23}\mathrm{d}x$$

Pomnožite 4108 in 7, da dobite 28756.

$$\int _{2}^{7}\frac{28756}{23}x+x^{2}\times \frac{7}{23}+4\times \frac{7}{23}\mathrm{d}x$$

Izrazite 4\times \frac{7}{23} kot enojni ulomek.

$$\int _{2}^{7}\frac{28756}{23}x+x^{2}\times \frac{7}{23}+\frac{4\times 7}{23}\mathrm{d}x$$

Pomnožite 4 in 7, da dobite 28.

$$\int _{2}^{7}\frac{28756}{23}x+x^{2}\times \frac{7}{23}+\frac{28}{23}\mathrm{d}x$$

Najprej ovrednotite nedoločni integral.

$$\int \frac{28756x+7x^{2}+28}{23}\mathrm{d}x$$

Vsoto povežite z izrazom.

$$\int \frac{28756x}{23}\mathrm{d}x+\int \frac{7x^{2}}{23}\mathrm{d}x+\int \frac{28}{23}\mathrm{d}x$$

Faktorizirajte konstanto v vseh izrazih.

$$\frac{28756\int x\mathrm{d}x}{23}+\frac{7\int x^{2}\mathrm{d}x}{23}+\int \frac{28}{23}\mathrm{d}x$$

Ker \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} za k\neq -1, zamenjajte \int x\mathrm{d}x s \frac{x^{2}}{2}. Pomnožite \frac{28756}{23} s/z \frac{x^{2}}{2}.

$$\frac{14378x^{2}}{23}+\frac{7\int x^{2}\mathrm{d}x}{23}+\int \frac{28}{23}\mathrm{d}x$$

Ker \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} za k\neq -1, zamenjajte \int x^{2}\mathrm{d}x s \frac{x^{3}}{3}. Pomnožite \frac{7}{23} s/z \frac{x^{3}}{3}.

$$\frac{14378x^{2}}{23}+\frac{7x^{3}}{69}+\int \frac{28}{23}\mathrm{d}x$$

Poiščite integral \frac{28}{23} s tabelo skupnega integrali pravila \int a\mathrm{d}x=ax.

$$\frac{14378x^{2}}{23}+\frac{7x^{3}}{69}+\frac{28x}{23}$$

Določen integral je integral izraza, ovrednotenega pri zgornji omejitvi integriranja, minus integral, ovrednoten pri spodnji omejitvi integriranja.

$$\frac{14378}{23}\times 7^{2}+\frac{7}{69}\times 7^{3}+\frac{28}{23}\times 7-\left(\frac{14378}{23}\times 2^{2}+\frac{7}{69}\times 2^{3}+\frac{28}{23}\times 2\right)$$

Poenostavite.

$$\frac{1943795}{69}$$