+0  
 
0
679
2
avatar+117 

 

 

0.5xlnx−1.5x=0

 

The correct answer is e3, however I don't understand how you get this number from the equation above.

 Oct 7, 2015

Best Answer 

 #1
avatar+6248 
+10

\(0.5 x \ln(x) -1.5 x = 0 \\ 0.5 x \ln(x) = 1.5 x \\ x \ln(x) = 3 x \\ \mbox{Since }\ln(0) \mbox{ is not defined }x \neq 0 \mbox{ and we can divide both sides by }x \\ \ln(x) = 3 \\ x = e^3\)

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 Oct 7, 2015
 #1
avatar+6248 
+10
Best Answer

\(0.5 x \ln(x) -1.5 x = 0 \\ 0.5 x \ln(x) = 1.5 x \\ x \ln(x) = 3 x \\ \mbox{Since }\ln(0) \mbox{ is not defined }x \neq 0 \mbox{ and we can divide both sides by }x \\ \ln(x) = 3 \\ x = e^3\)

Rom Oct 7, 2015
 #2
avatar+117 
+5

Thank you so much!! 

 Oct 7, 2015

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