Whakaoti i te ∫ (from 1 to 3) of x^2+3x wrt x

$$\int _ { 1 } ^ { 3 } x ^ { 2 } + 3 x d x$$

Aromātai

$$\frac{62}{3}\approx 20.666666667$$

Ngā Upane Otinga

Aromātaitia te tau tōpū tautuhi-kore i te tuatahi.

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

Kōmitimititia te kīanga tapeke mā te kīanga.

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

Whakatauwehea te pūmau i ēnei kīanga katoa.

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

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

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

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}. Whakareatia 3 ki te \frac{x^{2}}{2}.

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

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.

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

Whakarūnātia.

$$\frac{62}{3}$$