elli elli
  • 23-05-2014
  • Mathematics
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log2/3 9/4=x+3 ????????????????

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Ryan2
Ryan2 Ryan2
  • 23-05-2014
[tex]log_{\frac{2}{3}}\frac{9}{4}=x^3\\ \\ \left(\frac{2}{3}\right)^x+3=\frac{9}{4}\\ \\ \left(\frac{2}{3}\right)^{x+3}=\left(\frac{2}{3}\right)^{-2}\\ \\ x+3=-2\\ \\ x=-2-3\\ \\ \boxed{x=-5}[/tex]
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kate200468
kate200468 kate200468
  • 23-05-2014
[tex]log_{ \frac{2}{3} } \frac{9}{4} =x+3\\\\log_{ \frac{2}{3} }( \frac{2}{3})^{-2} =x+3\\\\-2=x+3\\\\-x=3+2\\\\-x=5\ /\cdor(-1)\\\\x=-5[/tex]
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