✨ Best Answer ✨
3^log₉x=Mとおく。
log₉x=log₃x/log₃9=log₃x/2
底3の対数をとると、
log₃3^log₉x=log₃M
⇔log₉x•log₃3=log₉x=log₃x/2=log₃M
∴M=x^1/2=√xより、
g(f(x))=√x
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