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Mathematics 18 Online
OpenStudy (goldphenoix):

Prove that: 2^(3/4)= 4sqrt^3 I know it's true, but how to prove?

OpenStudy (goldphenoix):

OpenStudy (goldphenoix):

I figured it out. \[2^\frac{ 3 }{ 4 }=\sqrt[4]{2^3}\]\[\log 2^\frac{ 3 }{ 4 }=\log \sqrt[4]{2^3}\]\[\frac{ 3 }{ 4 }\log2=\log(2^3)^\frac{ 1 }{ 4 }\] Right Hand Side \[=\frac{ 1 }{4 } \log2^3\] \[=3\times \frac{ 1 }{ 4 } \log2\] Done~ Like magic

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