Whakaoti mō R
\left\{\begin{matrix}R=\frac{U^{2}}{P}\text{, }&U\neq 0\text{ and }P\neq 0\\R\neq 0\text{, }&P=0\text{ and }U=0\end{matrix}\right.
Whakaoti mō P
P=\frac{U^{2}}{R}
R\neq 0
Tohaina
Kua tāruatia ki te papatopenga
PR=UU
Tē taea kia ōrite te tāupe R ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te R.
PR=U^{2}
Whakareatia te U ki te U, ka U^{2}.
\frac{PR}{P}=\frac{U^{2}}{P}
Whakawehea ngā taha e rua ki te P.
R=\frac{U^{2}}{P}
Mā te whakawehe ki te P ka wetekia te whakareanga ki te P.
R=\frac{U^{2}}{P}\text{, }R\neq 0
Tē taea kia ōrite te tāupe R ki 0.
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