Aromātai
\frac{r}{8}
Kimi Pārōnaki e ai ki r
\frac{1}{8} = 0.125
Tohaina
Kua tāruatia ki te papatopenga
125\times \frac{1}{1000}r
Tātaihia te 10 mā te pū o -3, kia riro ko \frac{1}{1000}.
\frac{1}{8}r
Whakareatia te 125 ki te \frac{1}{1000}, ka \frac{1}{8}.
\frac{\mathrm{d}}{\mathrm{d}r}(125\times \frac{1}{1000}r)
Tātaihia te 10 mā te pū o -3, kia riro ko \frac{1}{1000}.
\frac{\mathrm{d}}{\mathrm{d}r}(\frac{1}{8}r)
Whakareatia te 125 ki te \frac{1}{1000}, ka \frac{1}{8}.
\frac{1}{8}r^{1-1}
Ko te pārōnaki o ax^{n} ko nax^{n-1}.
\frac{1}{8}r^{0}
Tango 1 mai i 1.
\frac{1}{8}\times 1
Mō tētahi kupu t mahue te 0, t^{0}=1.
\frac{1}{8}
Mō tētahi kupu t, t\times 1=t me 1t=t.
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