Whakaoti i te 70+0.9*0.9y+320+120+40-0.31y

$$70 + 0.9 \times 0.9 y + 320 + 120 + 40 - 0.31 y$$

Aromātai

$$\frac{y}{2}+550$$

Ngā Upane Otinga

Whakareatia te 0.9 ki te 0.9, ka 0.81.

$$70+0.81y+320+120+40-0.31y$$

Tāpirihia te 70 ki te 320, ka 390.

$$390+0.81y+120+40-0.31y$$

Tāpirihia te 390 ki te 120, ka 510.

$$510+0.81y+40-0.31y$$

Tāpirihia te 510 ki te 40, ka 550.

$$550+0.81y-0.31y$$

Pahekotia te 0.81y me -0.31y, ka 0.5y.

$$550+0.5y$$

Kimi Pārōnaki e ai ki y

$$0.5$$

Ngā Upane e Whakamahi ana i te Ture Pārōnaki mō te Tapeke

Whakareatia te 0.9 ki te 0.9, ka 0.81.

$$\frac{\mathrm{d}}{\mathrm{d}y}(70+0.81y+320+120+40-0.31y)$$

Tāpirihia te 70 ki te 320, ka 390.

$$\frac{\mathrm{d}}{\mathrm{d}y}(390+0.81y+120+40-0.31y)$$

Tāpirihia te 390 ki te 120, ka 510.

$$\frac{\mathrm{d}}{\mathrm{d}y}(510+0.81y+40-0.31y)$$

Tāpirihia te 510 ki te 40, ka 550.

$$\frac{\mathrm{d}}{\mathrm{d}y}(550+0.81y-0.31y)$$

Pahekotia te 0.81y me -0.31y, ka 0.5y.

$$\frac{\mathrm{d}}{\mathrm{d}y}(550+0.5y)$$

Ko te pārōnaki o tētahi pūrau ko te tapeke o ngā pārōnaki o ōna kīanga tau. Ko te pārōnaki o tētahi kīanga tau pūmau ko 0. Ko te pārōnaki o te ax^{n} ko te nax^{n-1}.

$$0.5y^{1-1}$$

Tango 1 mai i 1.

$$0.5y^{0}$$

Mō tētahi kupu t mahue te 0, t^{0}=1.

$$0.5\times 1$$

Mō tētahi kupu t, t\times 1=t me 1t=t.

$$0.5$$