Whakaoti i te ∫ (from - 1 to 2) of (2x^2+x)=

$$\int _ { - 1 } ^ { 2 } ( 2 x ^ { 2 } + x ) =$$

Aromātai

$$\frac{15}{2}=7.5$$

Ngā Upane Otinga

Aromātaitia te tau tōpū tautuhi-kore i te tuatahi.

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

Kōmitimititia te kīanga tapeke mā te kīanga.

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

Whakatauwehea te pūmau i ēnei kīanga katoa.

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

Nā te mea \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} mō te k\neq -1, me whakakapi \int x^{2}\mathrm{d}x ki te \frac{x^{3}}{3}. Whakareatia 2 ki te \frac{x^{3}}{3}.

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

Nā te mea \int x^{k}\mathrm{d}x=\frac{x^{k+1}}{k+1} mō te k\neq -1, me whakakapi \int x\mathrm{d}x ki te \frac{x^{2}}{2}.

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

Ko te tau tōpū tautuhi ko te pārōnaki kōaro o te kīanga i aromātaitia i te tepe tōrunga o te pāwhaitua, tangohia te pārōnaki kōaro i aromātaitia i te tepe tōraro o te pāwhaitua.

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

Whakarūnātia.

$$\frac{15}{2}$$