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![\bold{y=\dfrac{\sqrt[3]{\bold x}}x=\bold \big x^{-\frac23} }](/tpl/images/1041/4989/c3640.png)
![\log_2x=\dfrac3{\log_{xy}2}\qquad\qquad\qquad\quad x0\,,\ y0\\\\\\\log_2x=3\cdot\dfrac1{\log_{xy}2}\\\\\\\log_2x=3\cdo\log_2(xy)\\\\\log_2x=\log_2(xy)^3\quad\iff\quad x=(xy)^3\\\\x=x^3y^3\\\\\dfrac{x}{x^3}=y^3\\\\y=\sqrt[\big3]{\dfrac{x}{x^3}}\\\\y=\dfrac{\sqrt[3]x}x](/tpl/images/1041/4989/d91eb.png)
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