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100\times 102^{2x}=500000
Whakamahia ngā ture taupū me ngā taupū kōaro hei whakaoti i te whārite.
102^{2x}=5000
Whakawehea ngā taha e rua ki te 100.
\log(102^{2x})=\log(5000)
Tuhia te tau taupū kōaro o ngā taha e rua o te whārite.
2x\log(102)=\log(5000)
Ko te taupū kōaro o tētahi tau ka hīkina ki tētahi pū ko te pū whakarea ki te taupū kōaro o taua tau.
2x=\frac{\log(5000)}{\log(102)}
Whakawehea ngā taha e rua ki te \log(102).
2x=\log_{102}\left(5000\right)
Mā te tikanga tātai huri pūtake \frac{\log(a)}{\log(b)}=\log_{b}\left(a\right).
x=\frac{\log_{102}\left(5000\right)}{2}
Whakawehea ngā taha e rua ki te 2.