Datrys ar gyfer x
x=2
Datrys ar gyfer x (complex solution)
x=-\frac{i\times 2\pi n_{1}}{\ln(2)}+2
n_{1}\in \mathrm{Z}
Graff
Rhannu
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2^{-x+4}=4
Defnyddio rheolau esbonyddion a logarithmau i ddatrys yr hafaliad.
\log(2^{-x+4})=\log(4)
Cymryd logarithm dwy ochr yr hafaliad.
\left(-x+4\right)\log(2)=\log(4)
Logarithm rhif wedi’i godi i bŵer yw’r pŵer wedi’i lluosi â logarithm y rhif.
-x+4=\frac{\log(4)}{\log(2)}
Rhannu’r ddwy ochr â \log(2).
-x+4=\log_{2}\left(4\right)
Gyda’r fformiwla newid-sail \frac{\log(a)}{\log(b)}=\log_{b}\left(a\right).
-x=2-4
Tynnu 4 o ddwy ochr yr hafaliad.
x=-\frac{2}{-1}
Rhannu’r ddwy ochr â -1.
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