Datrys 1*3^x=27

$$1 \cdot 3 ^ { x } = 27$$

Datrys ar gyfer x

$$x=3$$

Camau gan Ddefnyddio Diffiniad Logarithm

Defnyddio rheolau esbonyddion a logarithmau i ddatrys yr hafaliad.

$$3^{x}=27$$

Cymryd logarithm dwy ochr yr hafaliad.

$$\log(3^{x})=\log(27)$$

Logarithm rhif wedi’i godi i bŵer yw’r pŵer wedi’i lluosi â logarithm y rhif.

$$x\log(3)=\log(27)$$

Rhannu’r ddwy ochr â \log(3).

$$x=\frac{\log(27)}{\log(3)}$$

Gyda’r fformiwla newid-sail \frac{\log(a)}{\log(b)}=\log_{b}\left(a\right).

$$x=\log_{3}\left(27\right)$$

Datrys ar gyfer x (complex solution)

$$x=\frac{2\pi n_{1}i}{\ln(3)}+3$$

$$n_{1}\in \mathrm{Z}$$